P0931 – BMW DTC

BMW DTC P0931 – Gear Shift Lock Solenoid/Actuator Control Circuit ‘A’ High

DTC P0931 meaning on BMW

DTC P0931 indicates a fault in the Gear Shift Lock Solenoid/Actuator Control Circuit ‘A’ on a BMW vehicle. This fault code is triggered when the powertrain control module (PCM) detects a high voltage condition in the circuit that controls the gear shift lock solenoid or actuator.

BMW DTC P0931 symptoms

Symptoms of DTC P0931 on a BMW may include:

• Difficulty shifting gears
• Inability to shift out of park
• Warning lights on the dashboard
• Intermittent or constant gear shift lock issues

BMW DTC P0931 causes

Common causes of DTC P0931 on a BMW include:

• Faulty gear shift lock solenoid or actuator
• Short or open circuit in the control wiring
• Corrosion or poor connections in the circuit
• Defective PCM

BMW DTC P0931 seriousness

DTC P0931 should be addressed promptly as it can lead to safety issues by preventing proper gear shifting. Ignoring this fault code may result in the vehicle being stuck in a particular gear or unable to shift out of park, which can be dangerous and inconvenient.

How to diagnose DTC P0931 on BMW

To diagnose DTC P0931 on a BMW, a mechanic should perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and related data
2. Inspect the gear shift lock solenoid/actuator and its wiring for any visible damage
3. Test the circuit for continuity and voltage using a multimeter
4. Check for any loose connections or corrosion in the circuit
5. If necessary, perform a PCM reset and retest the system

How to fix DTC P0931 on BMW

To fix DTC P0931 on a BMW, the following steps can be taken:

1. Replace the faulty gear shift lock solenoid or actuator
2. Repair any damaged wiring or connectors in the control circuit
3. Clean any corrosion from the circuit connections
4. If the PCM is determined to be faulty, replace or reprogram it as needed

How to erase DTC P0931 on BMW

To erase DTC P0931 on a BMW, follow these steps:

1. Use a diagnostic scanner to clear the fault code from the PCM memory
2. After clearing the code, perform a test drive to ensure the issue has been resolved
3. If the fault code returns, further diagnosis and repairs may be necessary

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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