BMW DTC P172C – Internal Transmission Control Module Level 2 Error, Interference Counter 3 above Threshold
DTC P172C meaning on BMW
The DTC P172C on a BMW indicates an Internal Transmission Control Module Level 2 Error, with the Interference Counter 3 above the threshold. This error code is specific to the transmission control module and signifies a fault related to the transmission system.
BMW DTC P172C symptoms
Symptoms of the DTC P172C 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 P172C causes
The DTC P172C on a BMW can be caused by issues such as a faulty transmission control module, wiring or connection problems, internal transmission faults, or software glitches within the control module.
BMW DTC P172C seriousness
The DTC P172C error code on a BMW should be taken seriously as it directly relates to the transmission system. Ignoring this issue can lead to further damage to the transmission components and potentially result in costly repairs if not addressed promptly.
How to diagnose DTC P172C on BMW
To diagnose the DTC P172C on a BMW, a professional diagnostic scan tool capable of reading transmission fault codes is required. The technician will perform a thorough inspection of the transmission system, check for any loose connections, and conduct tests to pinpoint the exact cause of the error code.
How to fix DTC P172C on BMW
Fixing the DTC P172C on a BMW may involve repairing or replacing the transmission control module, addressing any wiring issues, resolving internal transmission faults, or updating the control module software. It is recommended to consult with a qualified mechanic or dealership to accurately diagnose and repair the problem.
How to erase DTC P172C on BMW
To erase the DTC P172C on a BMW, the fault code can be cleared using a diagnostic scan tool. Once the underlying issue has been resolved and the repair completed, the technician can clear the error code to reset the transmission control module and ensure the fault 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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