BMW DTC P172D – Internal Transmission Control Module Level 2 Error, Interference Counter 4 above Threshold
DTC P172D meaning on BMW
DTC P172D is an Internal Transmission Control Module Level 2 Error with Interference Counter 4 above Threshold in BMW vehicles. This error code indicates a malfunction within the transmission control module that has exceeded the specified interference threshold.
BMW DTC P172D symptoms
Symptoms of DTC P172D in BMW vehicles may include harsh shifting, transmission slipping, delayed engagement, erratic shifting patterns, and in some cases, the transmission may go into limp mode. The transmission warning light on the dashboard may also illuminate.
BMW DTC P172D causes
The causes of DTC P172D in BMW vehicles can vary, but common reasons include faulty transmission control module, wiring issues, sensor malfunctions, low transmission fluid levels, or internal transmission problems.
BMW DTC P172D seriousness
DTC P172D in BMW vehicles should be taken seriously as it can lead to drivability issues and potential damage to the transmission if left unresolved. It is recommended to address this error code promptly to prevent further complications.
How to diagnose DTC P172D on BMW
To diagnose DTC P172D on a BMW, a professional diagnostic scan tool is required to retrieve the specific error code. The technician will then perform a thorough inspection of the transmission control module, wiring, sensors, and fluid levels to identify the root cause of the issue.
How to fix DTC P172D on BMW
Fixing DTC P172D on a BMW may involve repairing or replacing the faulty transmission control module, addressing any wiring or sensor issues, ensuring proper transmission fluid levels, and conducting any necessary repairs to the internal transmission components. It is recommended to consult with a qualified mechanic for proper diagnosis and repair.
How to erase DTC P172D on BMW
To erase DTC P172D on a BMW, the underlying issue causing the error code must first be resolved. Once the necessary repairs have been made, a diagnostic scan tool can be used to clear the error code from the transmission control module’s memory. It is important to ensure that the issue has been properly addressed before clearing the error code.
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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