BMW DTC P172A – Internal Transmission Control Module Level 2 Error, Interference Counter 1 above Threshold
DTC P172A meaning on BMW
The DTC P172A on a BMW indicates an Internal Transmission Control Module Level 2 Error, with the Interference Counter 1 above the threshold. This error code is specific to the transmission control module and signifies a fault related to the transmission system.
BMW DTC P172A symptoms
Symptoms of the DTC P172A on a BMW may include harsh shifting, transmission slipping, delayed engagement, or the transmission going into limp mode. The vehicle may also display a warning light on the dashboard indicating a transmission fault.
BMW DTC P172A causes
The DTC P172A on a BMW can be caused by various factors such as a faulty transmission control module, wiring issues, sensor malfunctions, or internal transmission problems. It is essential to diagnose the specific cause to effectively address the error code.
BMW DTC P172A seriousness
The seriousness of the DTC P172A on a BMW lies in the potential impact on the transmission system’s performance and overall drivability of the vehicle. Ignoring this error code can lead to further damage to the transmission components and may result in costly repairs if not addressed promptly.
How to diagnose DTC P172A on BMW
To diagnose the DTC P172A on a BMW, a comprehensive scan tool capable of reading transmission fault codes is required. The diagnostic process involves checking the transmission control module for any stored codes, conducting a visual inspection of the wiring and connectors, and performing functional tests on the transmission components.
How to fix DTC P172A on BMW
Fixing the DTC P172A on a BMW involves identifying and addressing the root cause of the error code. This may include repairing or replacing the transmission control module, resolving wiring issues, replacing faulty sensors, or conducting necessary repairs on the transmission system. It is recommended to follow manufacturer guidelines and use quality replacement parts.
How to erase DTC P172A on BMW
To erase the DTC P172A on a BMW, the underlying issue causing the fault code must first be resolved. Once the necessary repairs have been made, the error code can be cleared using a diagnostic scan tool capable of resetting transmission fault codes. After clearing the code, it is advisable to test drive the vehicle to ensure the error does not reoccur.
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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