BMW DTC P1931 – Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 2
DTC P1931 meaning on BMW
The DTC P1931 on a BMW indicates an Internal Transmission Control Module Monitoring Level 2 Error, Limp Home 2. This fault code is related to a malfunction in the transmission control module’s monitoring system, which can result in the vehicle entering a limp home mode to prevent further damage.
BMW DTC P1931 symptoms
Symptoms of the BMW DTC P1931 may include:
- Transmission shifting issues
- Limp mode activation
- Warning lights on the dashboard
- Reduced engine performance
BMW DTC P1931 causes
Common causes of the BMW DTC P1931 include:
- Faulty transmission control module
- Wiring or connection issues
- Internal transmission control module software malfunction
BMW DTC P1931 seriousness
The DTC P1931 on a BMW is a serious issue that should be addressed promptly. Ignoring this fault code can lead to further transmission problems and potential damage to the vehicle.
How to diagnose DTC P1931 on BMW
To diagnose the DTC P1931 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the transmission control module for any visible damage
- Check the wiring and connections for any signs of wear or corrosion
- Perform a software update or reprogramming if necessary
How to fix DTC P1931 on BMW
To fix the DTC P1931 on a BMW, the following steps may be taken:
- Replace the faulty transmission control module if needed
- Repair any damaged wiring or connections
- Perform a software update or reprogramming of the transmission control module
- Clear the fault code and reset the system
How to erase DTC P1931 on BMW
To erase the DTC P1931 on a BMW, a mechanic can use a diagnostic scanner to clear the fault code from the system. Once the underlying issue has been addressed and fixed, the fault code can be erased to reset the system and ensure proper operation.
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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