DTC U0055-88: Vehicle communication bus D - Bus off: Action
- Refer to the appropriate vehicle wiring diagrams and locate the audio amplifier module high speed CAN bus (HMI ) connector pins
- Inspect each connector pin for short circuit to power. Repair as necessary
- Inspect each connector pin for short circuit to ground. Repair as necessary
- Inspect each connector pin for short between CAN H and CAN L (cross coupled). Repair as necessary
- Using the Jaguar Land Rover approved diagnostic equipment, reset the AAM (11 01)
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Codes (14 FF FF FF) and retest