BMW DTC P172E – Internal Transmission Control Module Level 2 Error, Interference Counter above Threshold General Error
DTC P172E meaning on BMW
DTC P172E is an Internal Transmission Control Module Level 2 Error with an Interference Counter above Threshold General Error on BMW vehicles. This error code indicates a fault within the transmission control module that has exceeded the specified interference counter threshold.
BMW DTC P172E symptoms
Symptoms of DTC P172E on a BMW may include harsh shifting, transmission slipping, delayed engagement, erratic shifting patterns, and in some cases, the transmission may go into limp mode. The vehicle’s check engine light may also be illuminated.
BMW DTC P172E causes
The causes of DTC P172E on a BMW can vary, but common reasons include a faulty transmission control module, wiring issues, software glitches, or internal transmission component failures. It is essential to perform a thorough diagnosis to pinpoint the exact cause.
BMW DTC P172E seriousness
DTC P172E is a serious fault code on a BMW as it directly relates to the transmission control module’s operation. Ignoring this error code can lead to further transmission damage and potentially unsafe driving conditions. It is crucial to address this issue promptly.
How to diagnose DTC P172E on BMW
To diagnose DTC P172E on a BMW, a comprehensive scan tool capable of reading transmission fault codes is required. The technician should perform a full system scan to retrieve the error code and associated data. Additionally, conducting a visual inspection of the transmission control module and related wiring can help identify any visible issues.
How to fix DTC P172E on BMW
Fixing DTC P172E on a BMW typically involves addressing the root cause of the issue. This may include repairing or replacing the faulty transmission control module, resolving wiring problems, updating software, or repairing internal transmission components. It is recommended to follow manufacturer guidelines and seek professional assistance if needed.
How to erase DTC P172E on BMW
To erase DTC P172E on a BMW, the underlying issue causing the fault code must first be resolved. Once the problem is fixed, the error code can be cleared using a diagnostic scan tool capable of clearing transmission fault codes. After clearing the code, it is advisable to test drive the vehicle to ensure the issue has been successfully resolved.
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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