Home >> Land Rover >> 2023 >> Range Rover Velar HST >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Driver/Passenger Seat Module (DSM/PSM) -- Range Rover Velar/L560 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Seat Module - Driver/Passenger/Rear - Left/Right (DSM/PSM) (G2686736) >> B1D1B-87: Pneumatic Module - Missing message >> Possible Causes