The CAN communication system in your vehicle is responsible for transmitting data between various control units, including the steering column module (control unit N80) and the interior CAN bus. If you are receiving a fault code indicating an issue with the communication between the two, you can take the following steps to diagnose and address the issue:
Check the wiring harness: The wiring harness that connects the steering column module to the interior CAN bus should be inspected for any signs of damage or corrosion. Make sure that all connections are clean, secure, and free of debris.
Check the power supply: The power supply to the steering column module should also be checked to ensure that it is providing the correct voltage. Any voltage drops or fluctuations can cause issues with the communication between the two control units.
Check the control units: The steering column module and the interior CAN bus control unit should be checked to ensure that they are both functioning properly. This can be done by using a diagnostic scanner that can read fault codes and access the control unit's data.
Check for software updates: Sometimes, a software issue can cause communication problems between control units. Check with your dealership or mechanic to see if there are any software updates available for the steering column module and the interior CAN bus control unit.
Replace faulty components: If the wiring harness, power supply, or control units are found to be faulty, they should be replaced. It is important to use genuine parts that are designed for your specific make and model of vehicle to ensure proper operation and avoid further issues.
In some cases, the issue may be intermittent, so it is recommended to perform a road test to see if the fault code is triggered again. If the issue persists, it is recommended to take your vehicle to a certified mechanic or dealership for further diagnosis and repair.
Check the CAN communication with control unit N80 (Steering column module). Interior CAN bus
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