Home >> Land Rover >> 2023 >> Range Rover Velar HST >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Rear Differential Control Module (RDCM) -- Range Rover Velar/L560 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Rear Differential Control Module (RDCM) (G2044719) >> P186A-13: Differential Lock-up Actuator Brake Control Circuit/Open - Circuit open >> Possible Causes