Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) >> Description And Operation >> DTC B12A7-31: Steering Column Tilt Sensor A - No signal >> Possible Causes