Fault code P0705 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0705 – Transmission Range Sensor Circuit malfunction (PRNDL Input)

P0705: Causes, signs and repairs

Error code P0705 is displayed and the check engine light is on - what does this mean?

The OBD system has detected an error in the transmission range sensor. This DTC P0705 indicates that the control unit is receiving an invalid or implausible signal from the shift position sensor of the automatic transmission. For various manufacturers, this error code may also be referred to as "Transmission Range Sensor Circuit Malfunction".

What can cause this error code?

Defective transmission range sensor (TRS)
Damaged cable connections to the switching position sensor
Corroded or loose plug connections
Defective shift gate or shift lever mechanism
Faulty transmission control module (TCM)
Mechanical problems in the transmission
Incorrectly adjusted or worn shift cable
Defective ground cable of the sensor

What symptoms occur in parallel with fault code P0705?

Shifting problems: The automatic transmission shifts irregularly or not at all
Starting problems: Engine cannot be started in certain shift positions
Reversing light failure: Reversing lights do not work properly
Emergency running program: Transmission goes into safety mode and remains in one gear
Gearshift indicator: Incorrect or missing display of current transmission position
Idling problems: Unsteady idling or stalling when changing gear

How can the problem with error code P0705 be rectified?

The repair requires a systematic diagnosis of the transmission electronics and mechanical components.
Replace the sensor: Completely replace and calibrate the defective transmission range sensor
Carry out cable repair: Repair or replace damaged cables to the TRS
Clean plug connections: Clean and secure all electrical connections on the sensor
Adjust the shift mechanism: Correctly adjust and lubricate the shift linkage and Bowden cables
Replace the transmission control unit: If the TCM is defective, replace and program the control unit
Replace the entire shift gate: Replace the entire gearshift unit in the event of mechanical defects

FAQ - Frequently asked questions about DTC P0705

Can I continue driving with error code P0705?

Short journeys are possible, but the vehicle should be repaired as soon as possible. The code P0705 can lead to unpredictable shifting behavior, which impairs driving safety.

How much does it cost to repair error code P0705?

The repair costs are between 150-800 euros. A new transmission range sensor costs 80-200 euros, with more complex transmission problems the costs can be significantly higher.

How can I diagnose fault code P0705 myself?

You can read out the code using an OBD scanner. First check the plug connections on the TRS and test the shifting behavior in various positions.

Is error code P0705 manufacturer-specific?

No, P0705 is a standardized EOBD code that has the same meaning for all manufacturers. However, the repair approaches can vary depending on the vehicle type.

Can a defective P0705 trigger other fault codes?

Yes, often the codes P0706, P0707 or P0708 also occur, which are also related to the transmission range sensor.

How often should the transmission range sensor be serviced?

The TRS is normally maintenance-free. With regular transmission maintenance and clean plug connections, it usually lasts the entire service life of the vehicle.

Vehicles in which error code P0705 occurs most frequently

Error code P0705 is a widespread trouble code for automatic transmissions and can have various causes, but is most common in the following vehicles:

Ford: Focus, Mondeo, Explorer, F-150 (2000-2015)
General Motors: Chevrolet Silverado, GMC Sierra, Cadillac Escalade (1999-2014)
Chrysler: Jeep Grand Cherokee, Dodge Ram, Chrysler 300C (2002-2012)
Honda: Accord, Civic, CR-V, Pilot (1998-2010)
Toyota: Camry, Corolla, RAV4, Highlander (2000-2013)
Nissan: Altima, Sentra, Pathfinder, Murano (2001-2016)
Volkswagen: Passat, Golf, Touran, Tiguan (2003-2015)
BMW: 3 Series, 5 Series, X3, X5 with automatic transmission (2000-2012)
Mercedes-Benz: C-Class, E-Class, ML-Class (1999-2014)
Audi: A4, A6, Q5, Q7 with Tiptronic (2002-2013)

If code P0705 occurs in your vehicle, you should first check the electrical connections on the transmission range sensor. Many problems can be rectified by thoroughly cleaning the plug connections. In older vehicles, it is often necessary to adjust the gearshift mechanism. More complex repairs to the transmission should always be carried out by a specialist workshop, as modern automatic transmissions require precise calibration.

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