10 Most Common Transmission Problems & How to Fix Them

  1. Lack of Response
  2. Whining, Clunking and Humming
  3. Leaking/Low Fluid
  4. Grinding or Shaking
  5. Burning Smell
  6. Refuses to Go Into Gear
  7. Check Engine Light
  8. Transmission Noisy in Neutral
  9. Gears Slipping
  10. Dragging Clutch
  11. OBD2 Trouble Codes
  12. Get the Problem Diagnosed

Your car’s transmission is a complex mechanical system that controls the application of power from the engine to the driveshaft. It experiences more wear and tear over time than most other parts of your vehicle due to the heat and friction produced by their many moving and interacting components. At the bottom of this page you can find a Fair Replacement Cost Guide on popular models of transmission.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

Transmission repairs or replacements are inconvenient, stressful and typically quite expensive, so it’s a good idea to pay attention to any activity that seems unusual. Adhering to the recommended maintenance procedures and schedule intended to prevent problems will help your transmission last longer, perform better and require fewer repairs over its lifespan.

Major issues are bound to arise if your transmission is not well maintained and/or symptoms of a problem are not checked by a professional soon after they develop.

What Transmission Do I Have?

How to Diagnose the Problem

Automatic Transmission Cut AwayDetermining what problem(s) your car has may seem like an impossible task, especially to the untrained eyes and ears of the average driver. It may be helpful to think of your car’s inner workings as similar to that of the human body.

To diagnose car problems yourself, try to think of it in terms of your own body. For instance, if your stomach begins to hurt without warning, you’ll probably start thinking of the last thing you ate in order to figure out why you are in pain.

A similar type of thinking goes into diagnosing car trouble. Problems that involve mechanical systems typically exhibit distinct sensations and sounds that act as indicators that a certain process isn’t working the way it is intended to.

As soon as you recognize that something seems a bit “off” with your vehicle’s functionality, it’s time to start considering the problem and finding a way to fix it.

That said, if you’re having some car trouble, it is important to know what the most common types of transmission problems are so that you can easily diagnose them and get them fixed. Here is a list of 10 symptoms of transmission trouble and what signs you should look for.

Lack of Response or Shifting Delay

Ever notice that while driving that the car hesitates or refuses to go into gear? If you have, then there is definitely something wrong. The moment a driver shifts from park to drive the car should immediately go into the proper gear. For automatic transmissions, you might notice that when shifting into drive or park that there is a delay before you feel the gear engage. This is usually a transmission-based concern.

Manual transmissions can have the same lacking response issue, but after shifting into gear the engine’s RPMs will surge, but the car won’t move as fast as the engine sounds like it’s going. This is usually caused by a clutch that needs to be replaced, but may sometimes point to a more severe problem.


Whining, Clunking and Humming

It’s impossible to say exactly what your car will sound like when there is trouble with your transmission, but one thing is for sure, you’ll get a “I haven’t heard that sound before” feeling when you notice it. The sounds that are produced vary widely between different makes and models, but the best way to describe them is that you’ll probably hear a humming, buzzing or whining noise.

Manual transmissions will emit sounds that can be described as being slightly more mechanical, louder and abrupt sounding. A clunking sounds when you shift gears almost always lies within a transmission, while constant velocity joins or the differential may be the source if the clunking is coming from the underside of your car.

As mentioned already, it is always best to get the problem diagnosed and repaired as soon as possible and not wait until later when you “find the time” or “have the money”. If you wait until later what would have been a relatively inexpensive repair can easily become a much more costly one.

Leaking/Low Fluid

New Automatic Transmission FluidA leak is probably the most recognizable symptom and should be repaired as soon as possible. Letting the fluid leak is one of the most common causes transmission break down. Automatic transmission fluid (ATF) is the life-blood of a transmission as it lubricates, cleans and conditions the seals and acts as hydraulic fluid. Without it (or even if it gets too low), the engine will seize up and stop working completely.

ATF is bright red in color, clear and smells somewhat sweet if everything is working correctly. If this is what you find on your driveway, then all that needs to be fixed is the hole. If the fluid is dark and/or has a burnt smell then it’s time to get the fluid changed or flushed and repairs might be required.

To check if you’re running low on fluid, take your car for a short drive to warm it up and then lift the hood and read the dipstick (be sure the vehicle is on level ground). Unlike motor oil, transmission fluid is not burned off or consumed by a car so if the level is low then there is a leak somewhere that must be patched. It is recommended to top up the fluid anyway even if the leak still exists to make sure there is enough fluid for the transmission to function properly until you get it fixed.

Complete Guide: Transmission Fluid Leak Causes & Repair Cost.

To check the fluid level for a manual transmission, you must check at the transmission case (usually through the fill plug) – not with a dipstick under the hood.

Grinding or Shaking

A car is supposed to run smoothly and without any shaking, or jerking, and there is not supposed to be any grinding sounds. These all suggest that there is a problem with the gears. Manual transmissions commonly indicate problems by making a grinding noise or feeling when you shift into a gear. If the grinding occurs after engaging the clutch and shifting, this can be sign that the clutch may need to be replaced or adjusted. That said, it can also point towards several other issues including damaged or worn out gear synchronizes.

Automatic transmissions act a little differently. Instead of making a grinding noise, you will likely feel it take some time to wiggle into gear at first instead of the typical smooth transitions. As the problem gets worse, the transitions into the next gear become more jarring and involve more shaking. There are a few other reasons for grinding or shaking, but the appropriate course of action is still to have it inspected and serviced.

Burning Smell

Sign of Transmission ProblemsAny burning smell coming from your car is a cause for concern. Overheating transmission fluid is one of the causes of a burning smell. Transmission fluid helps keep the parts lubricated and cooled so that they don’t get worn out and damaged.

If the fluid breaks down, the system runs too hot which it results in increased friction and corrosive activity as well as the build up of additional sludge and debris. If this is not taken care of, the transmission will eventually damage itself enough to break down completely. The end result is an expensive replacement. Common causes include low fluid level or using the incorrect brand/type of fluid. To check for these, see the instructions in the section on Low/Leaking Fluid above.

Refuses to Go Into Gear

If the car will not shift after engaging the clutch and trying to move the stick, take a look at the fluid to make sure that it is at the right level. Other causes include using the incorrect thickness (type) of fluid and the clutch linkage or shift cables needing adjustment. The source of the problem could also be the vehicle’s computer system.

If you’ve already inspected the fluid, you can try resetting it. To do this, detach the battery and let it stand for thirty minutes. Then, reattach and allow the system to reset itself. This usually takes around thirty minutes. If this doesn’t work either, then it’s time to take it to a mechanic.

Check Engine Light

Check Engine LightThe check engine light located on your car’s dashboard is a great early indicator that something is about to go wrong (or already has) with your car, and in particular with your transmission. While the light turns on for a number of reasons other than transmission issues, it very important not to ignore this helpful warning sign.

There are sensors placed in many areas of a car’s engine that alert the computer if it senses unusual activity coming from a particular process. The sensors on a transmission can pick up on the slightest jerks and vibrations than you are not able to see or feel.

Take the vehicle in and have it inspected. They can take look and immediately tell what is happening through the use of similar diagnostic tools and the car’s computer. You can also view a list of common transmission diagnostic trouble codes.

If you’d like to diagnose the problem yourself (and possibly save yourself a trip to the mechanic’s) you can buy a diagnostic scan tool that is plugged into the instrument panel on the driver’s side and return a code that corresponds to the part that needs attention. Whatever you do, do not assume that the check engine light can wait because it might be warning you of a serious problem in the near future.

O/D Off Light Flashing On and Off

Transmission Noisy in Neutral

Luckily, a transmission that is noisy (goes “bump”) when it is in neutral could have an inexpensive, simple solution such as adding some fluid or changing it. This could do the trick, as it does for several other issues on this list. If that doesn’t work, the transmission may require professional attention to replace worn out parts, most commonly the bearings, worn gear teeth or the reverse idler gear.

Gears Slipping

A transmission stays in a designated gear until a shift is performed by the driver (manual) or the computer (automatic). If the transmission is spontaneously slipping in an out of gear (or simply popping into neutral) while driving, I don’t need to tell you that this is a serious safety risk. When you need to step on the gas to avoid a dangerous situation, you need power delivered to the wheels, end of story. The cause can be the link that holds the gears is worn or broken. Get your car inspected and repaired as soon as possible.

Dragging Clutch

A dragging clutch describes the symptom experienced by manual transmissions that involves the clutch disk failing to disengage the flywheel when the clutch pedal is pressed. The clutch is still spinning with the engine which makes it anywhere from difficult to impossible to change gears. This difficulty is accompanied by a grinding noise each time you try to change gears.

Fortunately, this problem is considerably less expensive to repair than many other issues. More often than not, the cause of this is too much slack in the clutch pedal. With too much slack available, the linkage between the clutch disk and pedal can’t pull the clutch disk away from the flywheel.

Has your transmission completely failed? Here are your 8 options to repair, replace, junk it, etc.

How Much Does a Remanufactured Transmission Cost?

On average, a remanufactured transmission will cost between $1,300 and $3,400, depending on the make and model of your vehicle. The cost of labor to install it is in addition to the price of the unit and will typically run between $400 and $800.

It is more expensive to replace your transmission with a reman than to have your transmission rebuilt for almost all makes & models.

However, if there is significant internal damage, the additional components and time required to get it back on the road may cause the final price of a transmission rebuild to be higher than a remanufactured transmission.

Here are the other differences between rebuilt vs. remanufactured transmissions.


It is important to keep up a regular maintenance schedule for your car. Many times major expensive repairs can be avoided if the vehicle is properly maintained. This is especially true if you notice something unusual. The car should be taken in immediately for service.

Brushing up on your knowledge of transmissions (at least the basics) is highly recommended as it can help you save money by avoiding costly inspections and doing simple procedures such as changing transmission fluid yourself as well as making you knowledgeable enough to avoid being over-repaired, over charged or simply ripped off.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

More Information by Transmission Type

GMFordChryslerOther MakesManual / Standard
4L60E4R75E / 4R75W42RLENissan RE5R05AT56
4L65E4F27EA604 / 41TENissan RE7R01AT45
4L80E4R10046RENissan RE4R01AT10
4T45E4R44E47RENissan CVTAX15
4T405R55E / 5R55N48REMercedes 722.6AX5
4T65E5R55S / 5R55W45RFEMercedes 722.9Jeep NSG370
4T65E-HD5R110W545RFEToyota AB60ETR-3650
4T80E6F3562TEToyota U241ENV5600
5L40E6F5065RFEToyota A750ENV4500
6L806R6068RFEToyota A750FNV3550
6L906R80W5A580 / NAG1Toyota A340FNV3500
6T406R140F4A42-1Toyota A340EG56
6T4510R80F4A42-2Toyota A650EMT82
6L45 / 6L50AX4N / AX4SF4A4B-1Toyota A541E5MT
6T70AWF21F4A4B-4Toyota A246E
6T75ECD4E948HPToyota A245E
8L90FNR5Aisin AS68RCToyota A140E
8L45TF-80SCAisin AS69RCToyota V4A51
9T50JF506EZF 6HP19
10L80A4LDZF 6HP26
Allison 1000C6ZF 8HP70
700R4AODHonda BYBA
Aisin AW55-50SNHonda MZHA
Aisin AW55-51Honda MKYA
Honda MZJA
Honda MT4A
Honda SPCA
Honda B0YA
Honda BZHA
Honda B4RA
Honda B6VA
Honda B7TA
Honda B7TA
Honda B7WA
Honda BVLA
Honda B7XA
Honda PN3A
Honda BAXA
Honda P36A
Honda BCLA
Honda GPPA
Honda PGRA
Honda BDGA
Honda B97A
Honda BGHA
Honda BMXA
Honda BVGA
Honda SMMA
Honda SP5A
Honda MCVA
Honda M6HA
Honda MDLA
Honda MJFA
Honda BJFA
Honda MJBA
Honda MRMA
Honda B90A
Honda MGFA
Honda B5SA
Honda MDKA
Honda MRVA
Honda MDRA
Honda BDKA
Honda BYFA
Honda BB7A

Reman Transmission Pricing Table

TransmissionStreet Smart Transmission
4L60E / 4L65E2100
4T45E / 4T40E1935
5L40E (Exc. BMW)2453
6T40 / 6T452432
6T75E / 6T702432
6L80 / 6L902559
Allison 10002478
4R75E/W 4R70W2025
4R100 / E4OD2226
AX4N / AX4S2037
FNR5 / AWTF-802148
6F50 / 6F352480
41TE (A604)1905
46RE (A518)2053
47RE (A618)2204
W5A580 / NAG12589
Nissan RE5R05A2583
Nissan CVTCall

Problems by Make & Model

Acura CL
Acura MDX
Acura TL
Buick Enclave
Buick Lacrosse
Buick Lucerne
Buick Rendezvous
Buick Rainier
Buick Regal
Buick Terraza
Cadillac CTS
Cadillac DTS
Cadillac Escalade
Cadillac SRX
Cadillac STS
Cadillac XTS
Chevy Avalanche
Chevy Blazer
Chevy C1500
Chevy C2500 HD
Chevy C3500 HD
Chevy Camaro
Chevy Cavalier
Chevy Cobalt
Chevy Colorado
Chevy Equinox
Chevy Express 1500
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Chevy HHR
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Chevy Malibu
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Chevy S10
Chevy Silverado 1500
Chevy Silverado 2500 HD
Chevy Silverado 3500 HD
Chevy SSR
Chevy Suburban
Chevy Tahoe
Chevy Trailblazer
Chevy Traverse
Chevy Uplander
Chevy Venture
Chevy W3500
Chevy W4500
Chrysler 200
Chrysler 300 - 300M
Chrysler Aspen
Chrysler Pacifica
Chrysler PT Cruiser
Chrysler Sebring
Chrysler Town & Country
Dodge Avenger
Dodge B1500
Dodge B2500
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Dodge Challenger
Dodge Charger
Dodge Dakota
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Dodge Journey
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Dodge Ram 1500
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Ford Crown Victoria
Ford E-150
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Ford E-450
Ford Edge
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Ford Excursion
Ford Expedition
Ford Explorer
Ford F150
Ford F250
Ford F350
Ford F450
Ford F550
Ford F53 Motorhome Chassis
Ford Five Hundred
Ford Flex
Ford Focus
Ford Freestar
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Ford Mustang
Ford Police Interceptor
Ford Ranger
Ford Taurus
Ford Thunderbird
Ford Windstar
GMC Acadia
GMC C1500
GMC C2500
GMC C3500
GMC Canyon
GMC Envoy
GMC G1500
GMC G2500
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GMC K1500
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GMC Savanna 1500
GMC Savanna 2500
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GMC Sierra 1500
GMC Sierra 2500 HD
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GMC Sonoma
GMC Suburban
GMC Terrain
GMC W3500
GMC W4500
GMC Yukon
Honda Accord
Honda Civic
Honda CR-V
Honda Fit
Honda Odyssey
Honda Pilot
Honda Ridgeline
Hummer H2
Hummer H3
Hyundai Santa Fe
Hyundai Elantra
Infiniti G35
Infiniti QX4
Infiniti QX56
Isuzu Ascender
Isuzu Axiom
Isuzu NPR
Isuzu Rodeo
Isuzu Trooper
Jeep Commander
Jeep Grand Cherokee
Jeep Liberty
Jeep Wrangler
Lexus GS300
Lexus GS400
Lexus GX470
Lexus IS300
Lexus LS400
Lexus LS430
Lexus LX470
Lexus RX300
Lincoln Aviator
Lincoln LS
Lincoln Mark LT
Lincoln MKC
Lincoln MKS
Lincoln MKT
Lincoln MKX
Lincoln MKZ
Lincoln Navigator
Lincoln Town Car
Lincoln Zephyr
Mazda 2
Mazda 3
Mazda 5
Mazda 6
Mazda 626
Mazda CX-7
Mazda CX-9
Mazda Tribute
Mercury Grand Marquis
Mercury Marauder
Mercury Mariner
Mercury Milan
Mercury Montego
Mercury Mountaineer
Mercury Sable
Mini Cooper
Nissan Altima
Nissan Armada
Nissan Frontier
Nissan Maxima
Nissan Murano
Nissan Pathfinder
Nissan Quest
Nissan Rogue
Nissan Sentra
Nissan Titan
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Nissan Xterra
Pontiac Aztek
Pontiac Bonneville
Pontiac Firebird
Pontiac G5
Pontiac G6
Pontiac G8
Pontiac Grand Am
Pontiac Grand Prix
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Pontiac Montana
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Pontiac Vibe
Ram 1500
Ram 2500
Ram 3500
Ram C/V
Ram Dakota
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Saturn Vue
Toyota 4Runner
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Toyota FJ Cruiser
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Volkswagen Routan
Volvo C30
Volvo C70
Volvo S40
Volvo S60
Volvo S70
Volvo S80
Volvo V40
Volvo V50
Volvo V70
Volvo XC70
Volvo XC90


Full Transmission DTC Codes Table

Trouble CodeDescription
U1000Cannot Communicate with TCM / Class 2 Communications Failure
U0101Lost Communication with TCM
U0402Invalid Data Received From Transmission Control Module
P0218Transmission Over Temperature Condition
P0700Transmission Control System (MIL Request)
P0701Transmission Control System Range/Performance
P0702Transmission Control System Electrical
P0703Torque Converter/Brake Switch B Circuit
P0704Clutch Switch In put Circuit Malfunction
P0705Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706Transmission Range Sensor Circuit Range/Performance
P0707Transmission Range Sensor Circuit Low Input
P0708Transmission Range Sensor Circuit High Input
P0709Transmission Range Sensor Circuit intermittent
P0710Transmission Fluid Temperature Sensor Circuit
P0711Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712Transmission Fluid Temperature Sensor Circuit Low Input
P0713Transmission Fluid Temperature Sensor Circuit High Input
P0714Transmission Fluid Temperature Sensor Circuit Intermittent P0715
P0715Input/Turbine Speed Sensor Circuit
P0716Input/Turbine Speed Sensor Circuit Range/Performance 
P0717Input/Turbine Speed Sensor Circuit No Signal
P0718Input/Turbine Speed Sensor Circuit Intermittent
P0719Torque Converter/Brake Switch B Circuit Low
P0720Output Speed Sensor Circuit
P0721Output Speed Sensor Circuit Range/Performance
P0722Output Speed Sensor Circuit No Signal
P0723Output Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725Engine Speed Input Circuit
P0726Engine Speed Input Circuit Range/Performance
P0727Engine Speed Input Circuit No Signal
P0728Engine Speed Input Circuit Intermittent
P0729Gear 6 Incorrect Ratio
P0730Incorrect Gear Ratio
P0731Gear 1 Incorrect Ratio
P0732Gear 2 Incorrect Ratio
P0733Gear 3 Incorrect Ratio
P0734Gear 4 Incorrect Ratio
P0735Gear 5 Incorrect Ratio
P0736Reverse Incorrect Ratio
P0738TCM Engine Speed Output Circuit
P0739TCM Engine Speed Output Circuit Low
P0740Torque Converter Clutch Circuit Malfunction
P0741Torque Converter Clutch Circuit
P0742Torque Converter Clutch Circuit Stuck On
P0743Torque Converter Clutch Circuit Electrical
P0744Torque Converter Clutch Circuit Intermittent
P0745Pressure Control Solenoid 'A'
P0746Pressure Control Solenoid 'A' Performance or Stuck Off
P0747Pressure Control Solenoid 'A' Stuck On
P0748Pressure Control Solenoid 'A' Electrical
P0749Pressure Control Solenoid 'A' Intermittent
P0750Shift Solenoid 'A'
P0751Shift Solenoid 'A' Performance or Stuck Off
P0752Shift Solenoid 'A' Stuck On
P0753Shift Solenoid 'A' Electrical
P0754Shift Solenoid 'A' Intermittent
P0755Shift Solenoid 'B'
P0756Shift Solenoid 'B' Performance or Stuck Off
P0757Shift Solenoid 'B' Stuck On
P0758Shift Solenoid 'B' Electrical
P0759Shift Solenoid 'B' Intermittent
P0760Shift Solenoid 'C'
P0761Shift Solenoid 'C' Performance or Stuck Off
P0762Shift Solenoid 'C' Stuck On
P0763Shift Solenoid 'C' Electrical
P0764Shift Solenoid 'C' Intermittent
P0765Shift Solenoid 'D'
P0766Shift Solenoid 'D' Performance or Stuck Off
P0767Shift Solenoid 'D' Stuck On
P0768Shift Solenoid 'D' Electrical
P0769Shift Solenoid 'D' Intermittent
P0770Shift Solenoid 'E'
P0771Shift Solenoid 'E' Performance or Stuck Off
P0772Shift Solenoid 'E' Stuck On
P0773Shift Solenoid 'E' Electrical
P0774Shift Solenoid 'E' Intermittent
P0775Pressure Control Solenoid 'B'
P0776Pressure Control Solenoid 'B' Performance or Stuck Off
P0777Pressure Control Solenoid 'B' Stuck On
P0778Pressure Control Solenoid 'B' Electrical
P0779Pressure Control Solenoid 'B' Intermittent
P0780Shift Malfunction
P07811-2 Shift
P07822-3 Shift
P07833-4 Shift
P07844-5 Shift
P0785Shift/Timing Solenoid
P0786Shift/Timing Solenoid Range/Performance
P0787Shift/Timing Solenoid Low
P0788Shift/Timing Solenoid High
P0789Shift/Timing Solenoid Intermittent
P0790Normal/Performance Switch Circuit
P0791Intermediate Shaft Speed Sensor Circuit
P0792Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793Intermediate Shaft Speed Sensor Circuit No Signal
P0794Intermediate Shaft Speed Sensor Circuit Intermittent
P0795Pressure Control Solenoid 'C'
P0796Pressure Control Solenoid 'C' Performance or Stuck off
P0797Pressure Control Solenoid 'C' Stuck On
P0798Pressure Control Solenoid 'C' Electrical
P0799Pressure Control Solenoid 'C' Intermittent
P0810Transmission Fluid Pressure Manual Valve Position Switch
P0811Maximum Adaptive and Long-Term Shift Times
P0812Transmission Fluid Overtemperature
P0813Torque Control Solenoid Malfunction
P0814Torque Converter Overstressed
P0816Transmission Fluid Pressure Manual Valve Position Switch Park/Neutral with Drive Ratio
P0817Transmission Fluid Pressure Manual Valve Position Switch Reverse with Drive Ratio
P0818Transmission Fluid Pressure Manual Valve Position Switch Drive without Drive Ratio
P0819Internal Mode Switch No Start/Wrong Range
P0820Internal Mode Switch Circuit ‘A’ Low
P0802Transmission Control System Request Circuit/Open
P0812Reverse Input Circuit
P0813Reverse Output Circuit
P0814Transmission Range Display Circuit
P0816Downshift Switch Circuit
P0817Starter Disable Circuit
P0819Up and Down Shift Switch to Transmission Range Correlation
P0820Gear Lever X-Y Position Sensor Circuit
P0821Gear Lever X Position Circuit
P0822Gear Lever Y Position Circuit
P0823Gear Lever X Position Circuit Intermittent
P0824Gear Lever Y Position Circuit Intermittent
P0825Gear Lever Push-Pull Switch (Shift Anticipate)
P0826Up and Down Shift Switch Circuit
P0827Up and Down Shift Switch Circuit Low
P08295-6 Shift
P0840Transmission Fluid Pressure Sensor/Switch “A”
P0841Transmission Fluid Pressure Sensor/Switch “A” Circuit Range/Performance
P0842Transmission Fluid Pressure Sensor/Switch “A” Circuit Low
P0843Transmission Fluid Pressure Sensor/Switch “A” Circuit High
P0844Transmission Fluid Pressure Sensor/Switch “A” Circuit Intermittent
P0845Transmission Fluid Pressure Sensor/Switch “B” Circuit
P0846Transmission Fluid Pressure Sensor/Switch “B” Circuit Range/Performance
P0847Transmission Fluid Pressure Sensor/Switch “B” Circuit Low
P0848Transmission Fluid Pressure Sensor/Switch “B” Circuit High
P0849Transmission Fluid Pressure Sensor/Switch “B” Circuit Intermittent
P0850Park/Neutral Switch Input Circuit
P0851Park/Neutral Switch Input Circuit Low
P0852Park/Neutral Switch Input Circuit High
P0853Drive Switch Input Circuit
P0854Drive Switch Input Circuit Low
P0856Traction Control Input Signal
P0857Traction Control Input Signal Range/Performance
P0858Traction Control Input Signal Low
P0859Traction Control Input Signal High
P0860Gear Shift Module Communication Circuit
P0861Gear Shift Module Communication Circuit Low
P0862Gear Shift Module Communication Circuit High
P0863TCM Communication Circuit
P0864TCM Communication Circuit Range/Performance
P0865TCM Communication Circuit Low
P0866TCM Communication Circuit High
P0867Transmission Fluid Pressure
P0868Transmission Fluid Pressure Low
P0869Transmission Fluid Pressure High
P0870Transmission Fluid Pressure Sensor/Switch “C” Circuit
P0871Transmission Fluid Pressure Sensor/Switch “C” Circuit Range/Performance
P0872Transmission Fluid Pressure Sensor/Switch “C” Circuit Low
P0873Transmission Fluid Pressure Sensor/Switch “C” Circuit High
P0874Transmission Fluid Pressure Sensor/Switch “C” Circuit Intermittent
P0875Transmission Fluid Pressure Sensor/Switch “D” Circuit
P0876Transmission Fluid Pressure Sensor/Switch D Circuit Range/Performance
P0877Transmission Fluid Pressure Sensor/Switch “D” Circuit Low
P0878Transmission Fluid Pressure Sensor/Switch “D” Circuit High
P0879Transmission Fluid Pressure Sensor/Switch “D” Circuit Intermittent
P0880TCM Power Input Signal
P0881TCM Power Input Signal Range/Performance
P0882TCM Power Input Signal Low
P0883TCM Power Input Signal High
P0884TCM Power Input Signal Intermittent
P0885TCM Power Relay Control Circuit/Open
P0886TCM Power Relay Control Circuit Low
P0887TCM Power Relay Control Circuit High
P0888TCM Power Relay Sense Circuit
P0889TCM Power Relay Sense Circuit Range/Performance
P0890TCM Power Relay Sense Circuit Low
P0891TCM Power Relay Sense Circuit High
P0892TCM Power Relay Sense Circuit Intermittent
P0893Multiple Gears Engaged
P0894Transmission Component Slipping
P0895Shift Time Too Short
P0896Shift Time Too Long
P0897Transmission Fluid Deteriorated
P0898Transmission Control System MIL Request Circuit Low
P0899Transmission Control System MIL Request Circuit High
P0900Clutch Actuator Circuit/Open
P0901Clutch Actuator Circuit Range/Performance
P0902Clutch Actuator Circuit Low
P0903Clutch Actuator Circuit High
P0904Gate Select Position Circuit
P0905Gate Select Position Circuit Range/Performance
P0906Gate Select Position Circuit Low
P0907Gate Select Position Circuit High
P0908Gate Select Position Circuit Intermittent
P0909Gate Select Control Error
P0910Gate Select Actuator Circuit/Open
P0911Gate Select Actuator Circuit Range/Performance
P0912Gate Select Actuator Circuit Low
P0913Gate Select Actuator Circuit High
P0914Gear Shift Position Circuit
P0915Gear Shift Position Circuit Range/Performance
P0916Gear Shift Position Circuit Low
P0917Gear Shift Position Circuit High
P0918Gear Shift Position Circuit Intermittent
P0919Gear Shift Position Control Error
P0920Gear Shift Forward Actuator
P0921Gear Shift Forward Actuator Circuit Range/Performance
P0922Gear Shift Forward Actuator Circuit Low
P0923Gear Shift Forward Actuator Circuit High
P0924Gear Shift Reverse Actuator Circuit/Open
P0925Gear Shift Reverse Actuator Circuit Range/Performance
P0926Gear Shift Reverse Actuator Circuit Low
P0927Gear Shift Reverse Actuator Circuit High
P0928Gear Shift Lock Solenoid Control Circuit/Open
P0929Gear Shift Lock Solenoid Control Circuit Range/Performance
P0930Gear Shift Lock Solenoid Control Circuit Low
P0931Gear Shift Lock Solenoid Control Circuit High
P0932Hydraulic Pressure Sensor Circuit
P0933Hydraulic Pressure Sensor Range/Performance
P0934Hydraulic Pressure Sensor Circuit Low
P0935Hydraulic Pressure Sensor Circuit High
P0936Hydraulic Pressure Sensor Circuit Intermittent
P0937Hydraulic Oil Temperature Sensor Circuit
P0938Hydraulic Oil Temperature Sensor Range/Performance
P0939Hydraulic Oil Temperature Sensor Circuit Low
P0940Hydraulic Oil Temperature Sensor Circuit High
P0941Hydraulic Oil Temperature Sensor Circuit Intermittent
P0942Hydraulic Pressure Unit
P0943Hydraulic Pressure Unit Cycling Period Too Short
P0944Hydraulic Pressure Unit Loss of Pressure
P0945Hydraulic Pump Relay Circuit/Open
P0946Hydraulic Pump Relay Circuit Range/Performance
P0947Hydraulic Pump Relay Circuit Low
P0948Hydraulic Pump Relay Circuit High
P0949Auto Shift Manual Adaptive Learning Not Complete
P0950Auto Shift Manual Control Circuit
P0951Auto Shift Manual Control Circuit Range/Performance
P0952Auto Shift Manual Control Circuit Low
P0953Auto Shift Manual Control Circuit High
P0954Auto Shift Manual Control Circuit Intermittent
P0955Auto Shift Manual Mode Circuit
P0956Auto Shift Manual Mode Circuit Range/Performance
P0957Auto Shift Manual Mode Circuit Low
P0958Auto Shift Manual Mode Circuit High
P0959Auto Shift Manual Mode Circuit Intermittent
P0960Pressure Control Solenoid “A” Control Circuit/Open
P0961Pressure Control Solenoid “A” Control Circuit Range/Performance
P0962Pressure Control Solenoid “A” Control Circuit Low
P0963Pressure Control Solenoid “A” Control Circuit High
P0964Pressure Control Solenoid “B” Control Circuit/Open
P0965Pressure Control Solenoid “B” Control Circuit Range/Performance
P0966Pressure Control Solenoid “B” Control Circuit Low
P0967Pressure Control Solenoid “B” Control Circuit High
P0968Pressure Control Solenoid “C” Control Circuit/Open
P0969Pressure Control Solenoid “C” Control Circuit Range/Performance
P0970Pressure Control Solenoid “C” Control Circuit Low
P0971Pressure Control Solenoid “C” Control Circuit High
P0972Shift Solenoid “A” Control Circuit Range/Performance
P0973Shift Solenoid “A” Control Circuit Low
P0974Shift Solenoid “A” Control Circuit High
P0975Shift Solenoid “B” Control Circuit Range/Performance
P0976Shift Solenoid “B” Control Circuit Low
P0977Shift Solenoid “B” Control Circuit High
P0978Shift Solenoid “C” Control Circuit Range/Performance
P0979Shift Solenoid “C” Control Circuit Low
P0980Shift Solenoid “C” Control Circuit High
P0981Shift Solenoid “D” Control Circuit Range/Performance
P0982Shift Solenoid “D” Control Circuit Low
P0983Shift Solenoid “D” Control Circuit High
P0984Shift Solenoid “E” Control Circuit Range/Performance
P0985Shift Solenoid “E” Control Circuit Low
P0986Shift Solenoid “E” Control Circuit High
P0987Transmission Fluid Pressure Sensor/Switch “E” Circuit
P0988Transmission Fluid Pressure Sensor/Switch “E” Circuit Range/Performance
P0989Transmission Fluid Pressure Sensor/Switch “E” Circuit Low
P0990Transmission Fluid Pressure Sensor/Switch “E” Circuit High
P0991Transmission Fluid Pressure Sensor/Switch “E” Circuit Intermittent
P0992Transmission Fluid Pressure Sensor/Switch “F” Circuit
P0993Transmission Fluid Pressure Sensor/Switch “F” Circuit Range/Performance
P0994Transmission Fluid Pressure Sensor/Switch “F” Circuit Low
P0995Transmission Fluid Pressure Sensor/Switch “F” Circuit High
P0996Transmission Fluid Pressure Sensor/Switch “F” Circuit Intermittent
P0997Shift Solenoid “F” Control Circuit Range/Performance
P0998Shift Solenoid “F” Control Circuit Low
P0999Shift Solenoid “F” Control Circuit High
P1702Nissan DTC: Transmission Control Module Unable to Access RAM
P1703Nissan DTC: Transmission Control Module Unable to Access ROM
P1705Nissan DTC: Throttle Position Sensor Circuit Malfunction
P1706Nissan DTC: Park Neutral Position Switch Circuit Malfunction
P1710Nissan DTC: Transmission Fluid Temperature Sensor Circuit
P1716Nissan DTC: Turbine Revolution Speed Sensor Circuit
P1721Nissan DTC: Vehicle Speed Sensor MTR
P1730Nissan DTC: A/T Interlock
P1731Nissan DTC: A/T 1st Engine Braking / 1-2 Shift Malfunction
P1752Nissan DTC: Input Clutch Solenoid Valve
P1754Nissan DTC: Input Clutch Solenoid Valve Function
P1757Nissan DTC: Front Brake Solenoid Valve
P1759Nissan DTC: Front Brake Solenoid Valve Function
P1762Nissan DTC: Direct Clutch Solenoid Valve
P1764Nissan DTC: Direct Clutch Solenoid Valve Function
P1767Nissan DTC: High and Low Reverse Clutch Solenoid Valve
P1769Nissan DTC: High and Low Reverse Clutch Solenoid Valve Function
P1772Nissan DTC: Low Coast Brake Solenoid Valve
P1774Nissan DTC: Low Coast Brake Solenoid Valve Function
P1821Internal Mode Switch Circuit ‘B’ Low
P1822Internal Mode Switch Circuit ‘B’ High
P1822Internal Mode Switch Circuit ‘B’ High
P1823Internal Mode Switch Circuit ‘P’ Low
P1824Internal Mode Switch Circuit ‘P’ High
P1825Internal Mode Switch Invalid Range
P1826Internal Mode Switch Circuit ‘C’ High
P1831Pressure Control Solenoid Power Circuit Low
P1832Pressure Control Solenoid Power Circuit High
P1833GM – TCC Solenoid Power Control Circuit Low Voltage
P1834GM – TCC Solenoid Power Control Circuit High Voltage
P1835Kick-Down Switch Circuit
P1836Kick-Down Switch Failed Open
P1837Kick-Down Switch Failed Short
P18421-2 Shift Solenoid Low Voltage
P18431-2 Shift Solenoid High Voltage
P1844Subaru – Transmission Fluid Pressure Sensor ‘A’ Circuit Intermittent
P18452-3 Shift Solenoid Low Voltage
P18472-3 Shift Solenoid High Voltage
P1850Brake Band Apply Solenoid Circuit
P1851Brake Band Apply Solenoid Performance
P1852Brake Band Apply Solenoid Low Voltage
P1853Brake Band Apply Solenoid High Voltage
P1860TCC PWM Solenoid Circuit Electrical
P1864Torque Converter Enable Solenoid Electrical Fault
P1866TCC PWM Solenoid Circuit Low Voltage
P1870Transmission Component Slipping: GM Transmission
P1871Undefined Gear Ratio
P1873Torque Converter Clutch Stator Temperature Switch Circuit Low Voltage
P1874Torque Converter Clutch Stator Temperature Switch Circuit High Voltage
P1886Transaxle Shift Timing Solenoid Performance
P1887Torque Converter Clutch Release Switch
P1890CVT Speed Control System
P1891Problem in Start Clutch Control System
P2700Transmission Friction Element A Apply Time Range/Performance
P2701Transmission Friction Element B Apply Time Range/Performance
P2702Transmission Friction Element C Apply Time Range/Performance
P2703Transmission Friction Element D Apply Time Range/Performance
P2704Transmission Friction Element E Apply Time Range/Performance
P2705Transmission Friction Element F Apply Time Range/Performance
P2706Transmission Friction Element F Malfunction
P2707Shift Solenoid F Performance / Stuck Off
P2708Shift Solenoid F Stuck On
P2709Shift Solenoid F Electrical
P2710Shift Solenoid F Intermittent
P2711Unexpected Mechanical Gear Disengagement
P2712Hydraulic Power Unit Leakage Intermittent
P2713Pressure Control Solenoid ‘D’
P2714Pressure Control Solenoid ‘D’ Performance or Stuck Off
P2715Pressure Control Solenoid ‘D’ Stuck On
P2716Pressure Control Solenoid ‘D’ Electrical
P2717Pressure Control Solenoid ‘D’ Intermittent
P2718Pressure Control Solenoid ‘D’ Circuit Open
P2719Pressure Control Solenoid ‘D’ Circuit Range/Performance
P2720Pressure Control Solenoid ‘D’ Control Circuit Low Voltage
P2721Pressure Control Solenoid ‘D’ Control Circuit High Voltage
P2722Pressure Control Solenoid ‘E’ Malfunction
P2723Pressure Control Solenoid ‘E’ Stuck Off
P2724Pressure Control Solenoid ‘E’ Stuck On
P2725Pressure Control Solenoid ‘E’ Electrical
P2726Pressure Control Solenoid ‘E’ Intermittent
P2727Pressure Control Solenoid E Ctrl Circ / Open
P2728Pressure Control Solenoid E Ctrl Circ Range/Perf
P2729Pressure Control Solenoid E Ctrl Circ Low Voltage
P2730Pressure Control Solenoid E Ctrl Circ High Voltage
P2731Pressure Control Solenoid F
P2732Pressure Control Solenoid F Performance or Stuck Off
P2733Pressure Control Solenoid F Stuck On
P2734Pressure Control Solenoid F Electrical
P2735Pressure Control Solenoid F Intermittent
P2736Pressure Control Solenoid F Ctrl Circ/Open
P2737Pressure Control Solenoid F Ctrl Circuit Range/Performance
P2738Pressure Control Solenoid F Ctrl Circuit Low Voltage
P2739Pressure Control Solenoid E Ctrl Circuit High Voltage
P2740Transmission Fluid Temperature Sensor B Circuit
P2741Transmission Fluid Temperature Sensor B Circuit Range Performance
P2742Transmission Fluid Temperature Sensor B Circuit Low
P2743Transmission Fluid Temperature Sensor B Circuit High
P2744Transmission Fluid Temperature Sensor B Circuit Intermittent
P2745Intermediate Shaft Speed Sensor B Circuit
P2746Intermediate Shaft Speed Sensor B Circuit Range/Performance
P2747Intermediate Shaft Speed Sensor B Circuit No Signal
P2748Intermediate Shaft Speed Sensor B Circuit Intermittent
P2749Intermediate Shaft Speed Sensor C Circuit
P2750Intermediate Shaft Speed Sensor C Circuit Range/Perf
P2751Intermediate Shaft Speed Sensor C Circuit No Signal
P2752Intermediate Shaft Speed Sensor C Circuit Intermittent
P2753Transmission Cooler Ctrl Circuit Open
P2754Transmission Cooler Ctrl Circuit Low
P2755Transmission Cooler Ctrl Circuit High
P2756Torque Converter Clutch Press Ctrl Solenoid
P2757Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Performance or Stuck Off
P2758Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Stuck On
P2759Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Electrical
P2760Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Intermittent
P2761Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Open
P2762Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Range/Performance
P2763Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit High
P2764Torque Converter Clutch Pressure Control Solenoid Ctrl Circuit Low
P2765Input/Turbine Speed Sensor B Circuit
P2766Input/Turbine Speed Sensor B Circuit Range/Performance
P2767Input/Turbine Speed Sensor B Circuit No Signal
P2768Input/Turbine Speed Sensor B Circuit Intermittent
P2769Torque Converter Clutch Circuit Low
P2770Torque Converter Clutch Circuit High
P2775Upshift Switch Circuit Range/Performance
P2776Upshift Switch Circuit Low
P2777Upshift Switch Circuit High
P2778Upshift Switch Circuit Intermittent
P2779Downshift Switch Circuit Range/Performance
P2780Downshift Switch Circuit Low
P2781Downshift Switch Circuit High
P2782Downshift Switch Circuit Intermittent
P2783Torque Converter Temp Too High
P2784Input/Turbine Speed Sensor A/B Correlation
P2786Gear Shift Actuator Temp Too High
P2787Clutch Temp Too High
P2788Auto Shift Manual Adaptive Learning at Limit
P2789Clutch Adaptive Learning at Limit
P2790Gate Select Direction Circuit
P2791Gate Select Direction Circuit Low
P2792Gate Select Direction Circuit High
P2793Gear Shift Direction Circuit
P2794Gear Shift Direction Circuit Low
P2795Gear Shift Direction Circuit High


Over to You

Which of these problems are you experiencing?

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9 years ago

Hello. I have a 2002 Ford Explorer XLT 4.0L V6. When driving shifts fine, when I stop and need to change from D to R, or vice versa it jerks, sometimes it jerks very hard. Also it became very slow to take off form stationary position but then it drives fine. Please help figuring out this issue.

9 years ago
Reply to  Justino

check the oil/ATF temperature sensor…and replace it..

9 years ago

I have a 2012 Chevy Captiva, auto transmission. it recently started making the “clinking” noise, about 3 weeks ago. A few days back when I tried accelerating on the highway the engine made the noise but the car did not budge any faster than the regular pace. Last night it started jerking and continued to jerk as I accelerated. When I tried to reverse it refused, now it’s in service waiting on the new spare parts for the gearbox.

Best thing to do in order to avoid what had happened to me is to take it for service, just get it checked out because it can be really expensive eventually…

9 years ago

I have a 2000 Mazda Protégé ES 1.8L automatic. I have had the car for about 6 months, and it has not slipped gears or anything.. Today I went to drive it, and it wouldn’t go into drive, like it didn’t catch on. Well I put it in Park, and revved it up, and put it in drive.. It felt like the handle and everything was hitting something smoothly, like a piece of cloth, and just wasn’t letting it go all the way in drive. Well I drove it and it drove fine, nothing seemed out of place. I went to put it in park. And it would not go all the way in park. It would be half way in park, and half way in reverse, but would want to slide into reverse when I gave it gas. Now the red thing that tells me it’s in park is red. So it’s in park, (Where it should be at least) but not all the way in park. I have never had this problem before.. I have to put it in Neutral to start it. Yesterday it started making a loud noise in reverse. But I still have reverse. Everything is fine. All gears work as fast and everything. Just don’t know what’s wrong with it.

8 years ago
Reply to  Gene

Could be shifter cable or component getting stretched or worn out causing this issue

9 years ago

Hi my automatic transmission drives horrible when “cold” after its been sitting for about 4 hours it will climb in rpms getting all the way to 6. At that point I have to drop it into drive 3 just to get the rpms to drop down to at least 4 and stop acting as if its in neutral. It will finally change about 10 miles up the road and drive like its a branf new car at that point. I’ve changed the fluid and filter about 5 months ago and I regularly check it and it does not smell Burnt. Every time I try to explain it to a mechanic they act as if I don’t know what I’m talking about and say “I’ve never heard of a car doing that”. But as a daily driver of this car I should know that there is a problem here. Can someone please help me and tell me if its something as simple as the computer failing or is it a serious problem that needs a rebuild?

8 years ago
Reply to  morgan

I’m having the exact same issue with my 89 Silverado. Changed the fluid /filter, added some Transx and adjusted the tv cable…nothing is working. If you figure it out, let me know.

7 years ago
Reply to  morgan

I’m having the same thing happened to me help

mike molson
9 years ago

I have a 2000 mustang gt 4.6… it’s a manual transmission… i hear a chirping or beeping whatever u want to call it coming from my clutch… If I just touch the clutch with my foot the sound stops.. but once I let go it happens again… is this something I should be concerned about? The sound isn’t very loud at all but I still don’t like that it’s there.

8 years ago
Reply to  mike molson

Sounds like your throw out bearing is making a racket. It should just be an annoying noise but no major problem. If you ever get a clutch job done make sure you replace throw out bearing and all.

9 years ago

have a 2006 ford e350 van diesel/ while driving when on a hill shifts down and acts like loses power and is slipping/ also some times not on hills when it goes to shift if dies like out of fuel /any ideas?

steve coloma
8 years ago
Reply to  dave

in my experience add a body ground. take a piece if electric wire to the negative post of your car battery then connect it somewhere to the body of your car.

9 years ago

My daughters car just broke down on side of road a long way from home and she said her car won’t go into drive or reverse but her fluid level is fine and she has never noticed any problems before now, could it possibly be her computer she has a 2002 Kia Spectra

9 years ago
Reply to  Sharon

Hi Sharon, I’m sorry to hear about your car trouble. If it isn’t any of the problems listed in this article and she hasn’t had any trouble until now, then the computer could be at fault.

Do you mean nothing happens when you shift into reverse/drive or that you cant move the shifter at all?
If you can move the shifter but nothing happens when you do, the transmission shift linkage could be broken/disconnected.

8 years ago
Reply to  Sharon

Sharon I had the same thing happen to my 1996 Pontiac Sun fire one day I stopped at a stop sign and the transmission slipped once then worked when I got it home I parked it and it stoped working no reverse wouldn’t let me outta park ended up replacing the transmission

9 years ago

I have a 2002 Chevy Impala, automatic trans. I smell a burning smell when I drive it that I’m not sure what it’s from. Also I notice it gives off a lot of heat even after being driven just a short time. After it’s been driven for a long time when it shifts, especially into 2nd gear it jerks or shifts hard. It drives smoothly, but you can tell something isn’t right. I have also noticed a substantial loss in power in that when I accelerate (especially uphill) it just won’t speed up very well, even when the pedal is against the floor.

Bob Herman
9 years ago
Reply to  Carnewb

Same here , 98 ZR2 S10 4WD

Mark L Newman
9 years ago

I have a 2001 Saturn SL2, driving home Sunday had on cruise control going down I65, all of a sudden RPMS went all the way up to the red, and slowed down from 70 mph to 30 mph. I got off at the next exit went to gas station and bought trans fluid. Added some but it didn’t seem that low? I got the car back to my parents and we left it over night at the garage. Monday went to the garage to tell them what was happening. Later in the afternoon they called and said “we took the top off the trans, everything is in tact and looks fine. Cannot figure out what is wrong?” Oh yea I found out that the gas station that the car will not go into reverse? Any ideas anyone?

9 years ago
Reply to  Mark L Newman

Try putting transmission Lucas in it if you have any more problems as for reverse its a common issue with saturns

Mark L Newman
8 years ago
Reply to  Mark L Newman

I ended up having another trans put in. They took it from another car that was in a wreck. Now 10 months later I get in car to go to work this morning and start the car, it will go in park, but when I put in R or D it slips to D3 and won’t move. Rolled out of parking space, pushed it back up and didn’t realize it was still in R when pushed it. Anyone know why this is happening?

Timothy brown
9 years ago

2006 kia sorento v6 four wheel drive, the vehical seemed too stay in first gear and shifted and went bye itself into four wheel drive what would cause that

9 years ago

98 explorer 4.0 awd had another motor put in and now no reverse and wont move in drive unless already moving 1 and 2 work good drive and over drive revs high and wont hardly move. the guy told me, nothing i did would have messed with the tranny. but i had no problems till he messed with it. what do i do

9 years ago

I have a Nissan car that has a gear problem, each time I change the gear the car will jack on speed and it will not enter reverse again. Please what should I do?. I have scanned and fixed the bad sensor but still giving the same problem when I replace the gear.

Olivier Jean-Gilles
9 years ago

I have an 02 Accord Lx coupe. It’s slow to shift gears and accelerate in Reverse, D4,D3,2 and 1. I just had a transmission flush & change. Even put in lubegard and Lucas transmission fix but it only works for about 2 days and goes right back to jerking into acceleration. Even had new shifting solenoids put in but still jerking. Any suggestions would be fine!

8 years ago

because you had a flush done on it all the sediment from normal ware has been kicked up and could be clogging the ports in your trans. You will have to take it in and have it cleaned. The shops wont tell you this but a flush is the one of worst thing you can do to you trans.

8 years ago
Reply to  Keith

Actually Keith, if the shop is reputable and does business with honesty, they (the shop) will tell you! If I have a customer who wants an “easy fix” such as additives (Lucas stop slip; which FYI for the other readers, that product is BS in a bottle) I have no problems telling them the truth which is that there is no magical way to quick fix it if you have a internal mechanical problem. Any shade tree will be more than happy to fix it, but that’s more than likely with a junkyard unit.

Also the only way to clean these “ports” as he calls them, is with the transmission dismantled, and into the high pressure cleaner as well as with the valve body disassembled.

Not trying to get snappy, but as a female Owner and Operator of an auto repair shop, it is a wonder how many people believe in these things. Always get another opinion and if possible, have the mechanic show you what the true problem is.

9 years ago

I have a 1996 GMC Jimmy, 2WD, automatic transmission. I’m the original owner and my Jimmy has approx. 350,000 miles. Original engine and transmission. My ‘check engine light’ has been on since I had about 40,000 miles on it. We turn it off for the semi-annual smog checks, then it comes back on about 30 miles father I drive it. Everything was checked and changed when it was originally under warranty. The problem was never found, so I can not rely on it for a true ‘warning’.

So, here’s my issue. I was driving yesterday and my engine began shaking violently. The check engine light began to flash, it as never done that before. I took my car to my mechanic (who I’ve trusted for years) and he sad that it threw several codes stating that my transmission was slipping. Well, of course driving to his shop it drove fine so he wasn’t able to see the engine shake. By the way, it shook when I was at stop signs and with the trans in park – not just driving in gear. He informed me that trans work could cause me to need major engine work in the near future. I just don’t get it. How can the trans cause the nine to violently shake? Can the codes be incorrect sense the check engine light has never worked correctly and int reliable? Is my mechanic wrong about needing major engine work if the trans is, as he says, replaced?

I’m frustrated as the engine has been amazing and reliable for 350,000. Oh, one note – not too long ago he replaced the fuel pump and has worked on my fuel injectors before. It felt as if my car wasn’t getting enough gas. It didn’t feel, to me, as if it ad anything to do with the transmission. I recently had the trans fluid flashed and filled. If anyone has any suggestions, or comments, they would be greatly appreciated. Thank you for reading this and your opinions ~

9 years ago
Reply to  Monica

Should not flush a tranny on an older car. The transmission fluid might have been holding parts together in side so basically when you take that fluid away, metal pieces come with it.

8 years ago
Reply to  Katelyn

I am sorry to say but that is not true.. A flush is perfectly fine, safe and twice as helpful.. 🙂

8 years ago
Reply to  MATTHEW

Agreed. I just did a flush and fluid change on my ford and it feels like a brand new tranny. 157k 2003 4.6/AOD-E

9 years ago
Reply to  Monica

The engine light flashing is a good indication of an engine miss fire in most all my experiences. And like mentioned before, never flush an old vehicles transmission. I have changed fluid by letting the trans draw in fresh on its own and catching the old till it comes clean, but never flush……

8 years ago
Reply to  Monica

For more information on whether or not to flush, see: https://www.transmissionrepaircostguide.com/what-is-a-transmission-flush/

9 years ago

1995 Saturn jerks when put on reverse what do you guys think could possible be wrong .

9 years ago
Reply to  Kayla

Common saturn issue

8 years ago
Reply to  Kayla

get duralube trans treatment and add to trans fluid, it will get rid of any trans clunking you have

9 years ago

Can anyone please explain why my car cant go in reverse but can drive forward
FYI: Makes noise when I put gear in reverse
Nissan pathfinder 2003

8 years ago
Reply to  jesusin25

sounds like you have a clutch pack failing and will need to have it serviced.

9 years ago

We have a 2002 chrysler t/c with almost 200,000 miles on it and when i would first start it up, it would start out in first gear then jerk into second and it would stay in 2nd gear even after stopping at a stop sign, and shifting into drive without turning engine off and starting back up after having been driven, the tranny would jerk into 2nd. the speedometer also stopped working. we replaced the speed sensors then it worked fine for about a week until it started acting up again. when it was raining, it would stop acting up, so we took a spray bottle and sprayed the wires where the sensors are plugged in. we had to solder one of the wires where it plugs in and it’s fine now. I guess when chryslers jerk into 2nd gear, the computer would make the tranny stay in 2nd as a safety feature to prevent further damage. But I think it does more damage than good cause i have to replace my tranny mounts from it jerking into 2nd so abruptly and it slips a little in 1st now, but it has almost 200,000 miles and still has no problem pulling my boat. it still has some life left in it.

9 years ago

I got a 2000 silverado 4×4. It drives fine and reverses fine when it’s cool. When it starts warming up, it seems to just not go anywhere even when I put it in reverse. Can you explain to me what is the issue

8 years ago
Reply to  raul214

Check cooling pump for it.

8 years ago
Reply to  raul214

Ever find out what the problem was? I’m having the same issue and I’m clueless about it.

8 years ago
Reply to  Stacy

It seems that the 40L60 and 40L80M transmissions were prone to heating problems. The reality is that they sometimes respond to programmed error-handling software that tell the Silverado to shut down when the transmission fluid is warm.

You’d think that the problem would be lie in the cooler lines, wouldn’t you? It seems to make lots of sense, but, looks can really be deceiving here. It is more than likely the pressure control solenoid — or another switch in the same circuit — that is failing. The solenoid is shorting to ground and causing the transmission to react by stopping.

In a way, the transmission is trying very hard to go into limp home mode, but isn’t quite getting there.

So, what can you do to fix this? First, have your transmission specialist run a diagnostic and hook up a diagnostic reader to the OBD-II connector. It should likely pick up a code for a pressure control sensor or module failure. Once you have found the codes, it is fairly straightforward to swap out the old electronics and put in new electronics.

It is possible that the torque converter is going. Just the slamming and banging into gear could easily damage it and other parts.

However, the PCS (pressure control solenoid) is likely the problem, there are other issues that might be having an impact on the transmission. Most likely, you will find that a check valve in the valve body is plugged up, inhibiting the flow of transmission fluid. Or, it could be a plugged transmission filter causing an overpressure indication or it may be a check valve, a plugged filter and, possibly, a constriction in a cooling line for the transmission.

It may certainly seem like there are a whole bunch of potential problems that have to be fixed. And, it is true there could be. The only thing that is being suggested here, aside from finding the solenoid that is likely causing this whole mess, is that all potentials should be explored so that you won’t find that you have invested roughly $1,000 to fix the solenoid/sensor/module problem and that investment has yielded no real repair because it seems that the transmission is still having problems.

All that said, some owners have found that the addition of a $1,000 transmission cooler is just the ticket to make sure this problem doesn’t come back.

9 years ago

I have a leak from my transmission the leak is light pink on the ground and does not have any smell. I have a 1997 Lexus es 300 with approximately 105000 miles. What do you think the problem could be

9 years ago
Reply to  Reggie7217

To Reggie7217, transmission leak is the vaguest way of saying it. There are many different places that a transmission can leak from, starting with the cooler lines which are the easiest fix. The first step to identifying a leak is to start by watching the car when it’s on, first be sure the fluid level is where it should be though to avoid any damage from fluid already lost. Try to identify the source of the leak, start from looking exactly where it’s falling on the ground, this can be easier said than done on a slow leak. Then go up and see where the real origination is, leaks can be difficult to find especially for someone who known little about cars.

Things to check are if it’s coming from the bottom of the transmission, which could either be loose bolts or a transmission pan gasket, most likely is that or your cooler lines, trust me I know how it is, don’t want to go to some crap place that screws you but don’t know a whole lot. Good luck.

9 years ago

No noise no movement any gear automatic transmission 08 f250 column shifts p r n d 123 what likely the problem happened after parked after race. And my fluid is full still bright red. No codes on truck.

Benny Gaston
9 years ago
Reply to  Jason

I have a 06 F 250 tran just quit fluid level ok. I have 290,000 miles on it. It has been pulling good and shifting great. At about 50-60 it tries to downshift. I stop put it in neutral then in drive, it tried to pull at about 5 or 6 then I got po741 p0751 po766 p1744 p2700 p2703.

8 years ago
Reply to  Jason

Check the shift linkage that’s what goes from handle to trans case

9 years ago

Neutral and park gears no problem, but drive, 1st, 2nd and reverse engages when in gear off and on as each one is tested. This truck is a Dodge B250 318 5.2l 2 barrel carb. 90,000 miles. I bought this unit 3 yrs. ago and have driven 1000 miles or so with no problems. It’s a high top van being converted to a camper. The transmission fluid and filter etc. were done and run fine until now. Will reset the computer and change the fluid’s again. What do you guys think? Thanks.

8 years ago
Reply to  paul

Because you are using it as a camper I’m guessing that you leave it in park and run it when you are sleeping to have the heat on. This is a problem because in park a dodge dose not run the the transmission pump so the trans oil does not heat up and can cause problems. if you get it fixed i recommend getting some wheel stops and having it in neutral when you have it setting and running.

8 years ago
Reply to  Keith

So what you are saying is I should leave my car running in neutral anytime is not being driven even if I’m sleeping in my bed at home That way my fluid will never be cold? Your transmission doesn’t care of you are running in park or not running at all. That’s why no pump while in park. You can’t damage transmission or fluid by running car in park.

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