BMW DTC P17C0 – Internal Transmission Control Module Watchdog Program Flow Error
DTC P17C0 meaning on BMW
The DTC P17C0 code on BMW vehicles indicates an Internal Transmission Control Module Watchdog Program Flow Error. This error occurs when the transmission control module detects an issue with the program flow within its internal watchdog system.
BMW DTC P17C0 symptoms
Symptoms of the BMW DTC P17C0 code may include erratic shifting behavior, transmission slipping, harsh shifting, or the transmission going into limp mode. The vehicle may also display a warning light on the dashboard indicating a transmission fault.
BMW DTC P17C0 causes
The Internal Transmission Control Module Watchdog Program Flow Error (DTC P17C0) on BMW vehicles can be caused by software glitches, electrical issues, faulty sensors, or internal module malfunctions. It may also be triggered by a communication error between the transmission control module and other vehicle systems.
BMW DTC P17C0 seriousness
The DTC P17C0 error code should be addressed promptly as it can lead to drivability issues and potential damage to the transmission system if left unresolved. Ignoring this error may result in further transmission problems and could compromise the safety and performance of the vehicle.
How to diagnose DTC P17C0 on BMW
To diagnose the DTC P17C0 code on a BMW, a professional diagnostic scan tool capable of reading transmission fault codes is required. The technician will perform a comprehensive scan of the transmission control module to identify the specific cause of the watchdog program flow error. Additionally, a visual inspection of the transmission wiring harness and connectors may be necessary to check for any visible damage or loose connections.
How to fix DTC P17C0 on BMW
Fixing the DTC P17C0 error on a BMW typically involves reprogramming or updating the transmission control module software to address any internal program flow issues. In some cases, replacing faulty sensors or repairing damaged wiring may be necessary to resolve the error. It is recommended to consult with a qualified automotive technician or BMW specialist to accurately diagnose and repair the root cause of the DTC P17C0 code.
How to erase DTC P17C0 on BMW
Once the underlying issue causing the DTC P17C0 code has been identified and resolved, the error code can be cleared using a diagnostic scan tool. The technician will access the transmission control module through the scan tool and navigate to the fault code section to clear the stored error codes. After clearing the code, it is advisable to test drive the vehicle to ensure that 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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.