Once the calibration is successful, clear the fault code and restart the vehicle to verify that the headlights perform their "startup dance" (moving up and down) correctly.
For detailed wiring diagrams and specific sensor locations, you can refer to the Nissan X-Trail Service Manual or the Nissan DTC Diagnosis Guide . Nissan B20db-54
In Nissan's hexadecimal diagnostic system, "-54" typically denotes a "Calibration/Parameter" error, indicating the module lacks the necessary baseline data to operate. 3. Common Causes Once the calibration is successful, clear the fault
A physical failure of the height sensor (often located on the rear axle) can prevent the system from completing its self-check. Once the calibration is successful