Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Parking Aid Control Module (PACM) -- LR4/L319 >> Diagnostic Trouble Code Index DTC: Parking Aid Control Module (PACM) >> Description And Operation >> DTC B1B54-12: Function LED - Park Aid - Circuit short to battery >> Possible Causes