Home › Land Rover › 2013 › Range Rover Supercharged › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Deployable TOWBAR Control Module (DTCM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Deployable TOWBAR Control Module (DTCM) › Description And Operation › DTC C1008-31: Left Power Running Board Position/Motion Sensor - No signal › Possible Causes