Electronic Repair Blog
If you own a BMW and are experiencing issues with the locking system, you may have come across the fault code 801C20. This fault code is related to the ZGM (central gateway module) and indicates that the fault memory is full, but there is no control unit fault.
One of the possible causes of this fault code is a voltage drop during the battery replacement process, which can cause the central gateway module to lose its programming. This can also lead to issues with the locking system, as the central gateway module is responsible for controlling various functions in the vehicle, including the locking system.
How to Fix 801C20 Fault Code
To resolve this issue, it is strongly recommended to have the central gateway module reprogrammed by a professional mechanic or technician using a BMW diagnostic tool. This process will clear the fault memory and restore the functionality of the locking system. It's crucial to address this issue promptly to avoid any further complications with the vehicle's electronic systems.
Requirements to Fix 801C20 Fault Code on BMW
To fix the BMW 801C20 fault code related to the ZGM (central gateway module), you would need the following hardware and software:
With these hardware and software tools, a professional mechanic or technician can diagnose the issue and reprogram the ZGM module to clear the fault memory and restore the functionality of the locking system.
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