P0908 - Intermittent gate position selection circuit

P0908 – OBD-II Trouble Code Technical Description

Intermittent gate position selection circuit

What does the fault code mean P0908?

Trouble code P0908 indicates an intermittent gate position select circuit applicable to vehicles equipped with OBD-II since 1996. The characteristics and resolution of this code may vary depending on the make of vehicle. The TCM sets this code when the gate position selector drive does not meet manufacturer specifications. Problems with the GSP sensor electrical circuit can cause the P0908 code to appear.

Possible reasons

An intermittent gate position selection circuit can be caused by the following reasons:

1. Features of the gate position selection drive.
2. Problems with the gate position selector wiring harness, such as opening or closing.
3. Poor quality of electrical connection in the gate position selection drive circuit.
4. Gate selection position sensor misalignment.
5. Failure of the gear shift lever.
6. Gate selection position sensor faulty.

What are the symptoms of a fault code? P0908?

Symptoms associated with the P0908 code include:

1. Inability to start the engine.
2. Chaotic behavior of the transmission.
3. Sharp gear shifting.
4. Delays in the transmission before changing gears.
5. Failure of cruise control to operate correctly.

How to diagnose a fault code P0908?

If you've recently had your transmission serviced and are experiencing a P0908 OBDII error code, it's worth asking a technician to check the gate select position sensor and shift lever settings. The following are the steps to follow to diagnose this DTC:

1. Make a note of any trouble codes and freeze frame data present to use in diagnosing intermittent errors.
2. Check the condition of the gear shift mechanism and, if necessary, correct any faults found. Clear the code and test drive the vehicle to see if the code comes back.
3. Check the electrical circuit, wiring features and condition of the gearbox selector position switch. If necessary, repair and replace the wiring. Clear the code and test the vehicle.
4. If there are no visible defects in the wiring, refer to the manual to perform resistance, ground continuity, and continuity tests on all applicable circuits.

Diagnostic errors

When diagnosing trouble code P0908, the following common errors may occur:

1. Incorrect setting or insufficient testing of the gate selection position sensor.
2. Incorrect assessment of the condition of the gear shift mechanism and incorrect identification of its malfunctions.
3. Insufficient checking of the electrical circuit and wiring, which may lead to missing hidden defects.
4. Improperly performing resistance, ground integrity, and continuity tests on circuits, which can lead to incorrect conclusions about system health.

It is recommended that you contact qualified technicians and follow the manufacturer's manual to properly diagnose and repair this problem.

How serious is the fault code? P0908?

Trouble code P0908 indicates an intermittent gate position circuit and can cause serious problems with the vehicle's transmission. Although the vehicle may continue to operate, rough gear changes, delays in shifting and other problems may occur that can significantly impair the driving experience and affect road safety. It is recommended that diagnostics and repairs be carried out as soon as possible to avoid further damage to the transmission and maintain the normal operation of the vehicle.

What repair will help eliminate the code? P0908?

To resolve error code P0908, you may need to do the following:

1. Check and, if necessary, adjust the gate selection position sensor.
2. Check and, if necessary, replace or adjust the gear shift mechanism.
3. Checking the electrical circuit and wiring to identify problems and then correct them.
4. Perform resistance, ground integrity, and continuity tests on circuits to identify possible faults.

Repair measures may vary depending on the specific cause of the P0908 code. It is recommended to contact qualified specialists for more accurate diagnosis and repair of the problem.

What is P0908 Engine Code [Quick Guide]

P0908 – Brand-specific information

Trouble code P0908 can apply to different makes of vehicles. Here are some of them with their explanations for code P0908:

1. Ford: Transmission Control Module (TCM) - General Error - Gate Position Select Circuit Intermittent.
2. Toyota: Transmission Controller (TCM) - Gate Position Selection Circuit Intermittent.
3. Honda: Engine/Transmission Control Module (ECM/TCM) - Gate Position Select Circuit Intermittent.
4. BMW: Transmission controller (EGS) – intermittent gate position selection circuit.
5. Mercedes-Benz: Transmission electronics controller (TCM) – intermittent gate position selection circuit.

It is recommended to contact official dealers or qualified specialists for more accurate information and diagnostics if this error occurs on a specific car make.