Nissan B20db-54 2021 -

A physical failure of the height sensor (often located on the rear axle) can prevent the system from completing its self-check.

The code is rarely a sign of a mechanical engine failure and is almost always electrical or software-related: Nissan B20db-54

Using a diagnostic tool, navigate to the or IPDM E/R section and select "Height Sensor Initialization." The vehicle must be on a level surface with no cargo or passengers inside to calibrate correctly. 3. Module Configuration A physical failure of the height sensor (often