P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)

What Does P0705 Mean?

The diagnostic trouble code (DTC) P0705 in your vehicle’s computer means that the sensor (Range Switch) that monitors what gear the transmission is in has experienced a fault and set a code in the Engine Control Module (ECM).

Need a replacement transmission? Quality transmission suppliers can be hard to find. Have your 17-digit vehicle VIN# ready. Free estimates sent via text and email.

The range switch (Park Neutral or PRNDL Switch) sends a signal to the ECM to tell it what gear the transmission is in. When the vehicle is put into a gear (P,R,D etc) it completes a circuit. Each individual circuit carries varying voltages that the ECM interprets.

If the ECM sees a signal that is not logical or out of range, it will set the DTC P0705.

Symptoms of P0705

  • Check Engine Light
  • No start (park or neutral)
  • No dash indicator (PRNDL)
  • Erratic shifting
  • No Reverse lights
  • Having to wiggle shift lever start
  • Having to put vehicle in neutral (N) to start

Causes of P0705 Code

The most common cause would be from a defective range switch that has an open or short within the component. In this case, the range sensor is getting the right input from the driver but cannot relay the message properly to the ECM. If the sensor is out of adjustment, it may be able to send a signal but it will send the wrong message to the ECM and trigger the code P0705.

Transmission Range Sensor

Sometimes the range switch can get moved slightly causing a misalignment of the switch. The code could also come from a problem with the ECM or TCM however this would usually produce other codes that would help in diagnosing the problem.

If the transmission fluid is low or contaminated it might produce problems within the valve body responsible for shifting gears and give the P0705 code. Other causes include:

  • A defective or faulty range switch
  • A switch that is out of adjustment
  • A faulty TCM or ECM
  • Poor transmission fluid
  • Problem within valve body

How to Diagnose the P0705 Code?

It’s always a good practice to start any transmission diagnostic by checking the fluid level and condition of the transmission.

Assuming all is right with the fluid, you can then inspect the electrical connection on the TRS by checking for proper power/ground specs. If the switch is mounted externally it is susceptible to road debris and moisture and may have a bad connection.

If you believe that the connection is good you can start checking for power/ground/volt reference. You will need to get a wiring schematic to ensure you check the proper wires and that your readings are correct. Someone may have to sit in the car and shift gears so you can check all inputs and outputs.

Depending on the style, the range switch (contact, variable resistor, pressure) can be tested if you have the proper tool, namely, a digital multi meter. A multi meter can easily test voltage changes or resistance in circuit and an auto ranging multimeter will be your best option for diagnosing. If all sensors test good you will have to check the circuit for opens or shorts if the code does not specify a short to power or ground.

Common Mistakes When Diagnosing P0705 Code

As with any transmission diagnostic, mechanical or electrical, the first step should always be to check the fluid level and condition. All vehicle have a slightly different method for checking transmission fluid level so you have to be sure all conditions are met before taking a measurement.

Low or contaminated transmission fluid can lead to several troubling problems. Also make sure the switch is properly aligned before deciding to replace it and, conversely, make sure it is properly aligned after installation.

What Repairs Will Fix the P0705 Code?

Changing a defective switch will fix that problem but proper alignment will have to be set before repairs are complete so begin by learning the adjustment procedure.

The wiring harness will have to be thoroughly checked if a broken wire is suspected.

If low fluid or contamination is present a proper flush may fix the problem if there hasn’t already been excessive damage.

A closed circuit, preferably heated flush machine should be used to make sure all dirty fluid is evacuated otherwise debris may stay in the system and the problem could return. If you found the switch was only out of adjustment, look for any signs of damage that might have caused it to move or when reassembling check for proper torque specs (if any) when re-mounting.

Codes Related to P0705

Related Transmission Range Sensor codes: P0706, P0707, P0708, and P0709.

It would not be uncommon for this to be the only code you find but it may also be associated with something more severe.

Fair Replacement Transmission Cost by Vehicle

  1. Find your transmission model in the table below for fair prices from reputable suppliers. Also fair labor cost for local installation at a local auto repair shop.

  2. Get a free estimate on a remanufactured transmission by email.

Fair Remanufactured Transmission Price Ranges by Transmission Model Updated July 2018

transmission repair cost
Download Replacement Transmission Cost Guide PDF

Links To Diagnostic Codes

Trouble CodeDescription
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

Links To Symptoms

Symptoms
Low Transmission Fluid
Transmission Slipping
Limp Mode
Burnt Transmission Fluid
DTC / Check Engine Codes
Lack of Responses
Torque Converter Problems
Whining, Clunking or Humming
Transmission Fluid Leak
Solenoid Problems

Comments

Have this code? Found a fix? Note it in the comments below.

1 thought on “P0705: Transmission Range Sensor Circuit Malfunction (PRNDL Input)

  1. Ihave an Audi A4 2001 MODEL PROBLEM IS FLASHING PRNDL WHILE DRIVING, SPEED 20KM AFTER TRAVELLING NO REVERSE LIGHTS WHEN COOL REVERSE LIGHTS COME ON WHAT IS THE PROBLEM IS THE SENSOR IN THE GEAR BOX OR WHAT AM FROM ZAMBIA DO YOU HAVE THIS SENSOR PO7O5 CODE

Leave a Comment