Based on the heroically good Nissan 370Z chassis, the Infiniti G37 sedan, coupe and convertible were three of the most impressive luxury sport sedan/coupes that nobody had never heard of. But they aren’t without their problems though, so let’s look at some of the most common Infiniti G37 transmission problems, look at cost estimates and figure out what you can do about them.
What Transmission Do I Have?
Infiniti G37 Transmission Models
Infiniti G37: RE7R01A Transmission
Infiniti G37 Transmission Replacement Cost Estimate
Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use our Get An Estimate feature to look up your transmission by VIN#.
Replacement Infiniti G37 Transmission Prices:
| Transmission | Street Smart Transmission |
What are the DTC codes related to Infiniti G37 transmission problems?
| Trouble Code | Description |
|---|---|
| U1000 | Cannot Communicate with TCM / Class 2 Communications Failure |
| U0402 | Invalid Data Received From Transmission Control Module |
| P0705 | Transmission Range Sensor Circuit Malfunction (PRNDL Input) |
| P0710 | Transmission Fluid Temperature Sensor Circuit |
| P0717 | Input/Turbine Speed Sensor Circuit No Signal |
| P0720 | Output Speed Sensor Circuit |
| P0725 | Engine Speed Input Circuit |
| P0729 | Gear 6 Incorrect Ratio |
| P0730 | Incorrect Gear Ratio |
| P0731 | Gear 1 Incorrect Ratio |
| P0732 | Gear 2 Incorrect Ratio |
| P0733 | Gear 3 Incorrect Ratio |
| P0734 | Gear 4 Incorrect Ratio |
| P0735 | Gear 5 Incorrect Ratio |
| P0740 | Torque Converter Clutch Circuit Malfunction |
| P0744 | Torque Converter Clutch Circuit Intermittent |
| P0745 | Pressure Control Solenoid 'A' |
| P0750 | Shift Solenoid 'A' |
| P0775 | Pressure Control Solenoid 'B' |
| P0780 | Shift Malfunction |
| P0795 | Pressure Control Solenoid 'C' |
| P1705 | Nissan DTC: Throttle Position Sensor Circuit Malfunction |
| P1721 | Nissan DTC: Vehicle Speed Sensor MTR |
| P1730 | Nissan DTC: A/T Interlock |
| P1826 | Internal Mode Switch Circuit C High |
| P2713 | Pressure Control Solenoid D |
| P2722 | Pressure Control Solenoid E Malfunction |
| P2731 | Pressure Control Solenoid F |
Infiniti G37 Transmission Recalls
None Found
Infiniti G37 Technical Service Bulletins (TSB)
ITB09–032b – Harsh 4>3 downshift on deceleration
2009 Nissan 370Z – 2009 Infiniti FX35 – 2009 Infiniti FX50 – 2009 Infiniti G37 sedan and coupe – 2009 Infiniti M35
ITB12–027d – Shift responsiveness problems / unusually harsh shifting
2009 – 2011 Infiniti G37 sedan and coupe – 2009 – 2012 Infiniti G37 convertible
Common Infiniti G37 Transmission Problems
Transmission slips/engine races when accelerating – RE7R01A transmission
Problem – If you step on the gas and the engine races without increasing the vehicle speed, the transmission may be slipping.
Solution – If your RE7R01A transmission is slipping, it could be caused by a number of things including; a failing line pressure solenoid valve, low brake solenoid valve, direct clutch solenoid valve, 2346 brake solenoid valve, anti-interlock solenoid valve, input speed sensor, output speed sensor, transmission fluid temperature sensor, wiring/communication issue with the CAN bus system, or valve body issues/failure.
Transmission range switch failure – RE7R01A transmission
Problem – If the transmission range sensor has failed in your Nissan, a number of symptoms can occur including having a difficult time engaging or disengaging Park, the vehicle moves forward when the gear selector is in the P and/or R position, the vehicle moves backward when the shifter is in the D position.
Solution – Check, adjust and/or replace the shift linkage and/or the transmission range switch.
Lack of Response
Leaking Fluid
Low Fluid
Burning Smell
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
Gears Slipping
No 3rd or 4th Gear
No 1st or 2nd Gear
No Reverse
Dragging Clutch
Trouble Codes / Check Engine Light
Can I drive with a transmission problem?
If your Infiniti G37 can still make it up and down the road, you might say “It’s fine, I’ll just drive it until I can get it fixed”. But that is not always a good idea, depending on the symptoms. You see, there are a lot of (very expensive) moving parts inside of a transmission, and if something isn’t right, continuing to drive with a transmission problem could damage something else.
How often does a Infiniti G37 transmission need to be replaced?
The overall lifespan of a Infiniti G37 transmission largely depends on how well it was maintained. Factory design flaws also factor into this equation, along with how/how hard you drive. But on average, we’ve seen the Infiniti G37 transmissions last for between 130,000-180,000 miles. A high quality replacement transmission however, can last considerably longer if all of the factory design flaws have been addressed and the vehicle has been maintained.
How are Infiniti G37 transmission issues diagnosed?
It is fairly easy to guesstimate what the root cause of your Infiniti G37 transmission problems might be, but you won’t truly know unless you have the right tools and experience. A good mechanic or transmission repair center will be able to connect your truck to a computer and find out which diagnostic trouble codes (DTC’s) have been stored. Once they know what to look for, they can perform a visual inspection to verify the problem.
How is a Infiniti G37 transmission replaced?
In order to replace your Infiniti G37 transmission, the truck has to be lifted from the ground in order to gain access to all of the parts that will need to be unbolted. Then the transmission can be lowered to the ground (typically with a transmission jack), so the new transmission can be installed.
Recommendations for Infiniti G37 transmission issues?
To save time and get back on the road faster, have your 17-digit truck VIN# handy and you can get an online quote for a reman Infiniti G37 transmission here, then find a local shop using our Find a Shop guide to install it for you.
How to Solve Infiniti G37 Transmission Problems
Solution A: Buy a Used Infiniti G37 Transmission
The quickest way to fix your transmission problems is to simply buy a used transmission or used transmission. These can be found at most junk yards, and they often come with a 30-90 day warranty. However, there’s no way to determine the actual condition of the internal components, so you could be spending a bunch of money to have the exact same problems. Plus, that warranty only covers the transmission if it’s defective, not the labor costs that you’ll have to pay.
Solution B: Buy a Rebuilt Infiniti G37 Transmission
Another option would be a rebuilt transmission or rebuilt transmission. A local repair shop will remove your transmission, then install a bunch of new parts during the rebuild. The problem here is, the skills and experience of each transmission rebuilder will vary widely from shop to shop, so you could have problems from something that wasn’t adjusted properly. And the 1-2 year warranty might only cover you at certain transmission repair shops, in a specific geographical area.
Solution C: Buy a Remanufactured Infiniti G37 Transmission
What Transmission Do I Have?
Many owners depend on their vehicle to commute and get things done. Their gasoline engines are designed to go 100’s of thousands of miles, so it makes sense to invest in a remanufactured transmission.
