Home >> Land Rover >> 2015 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper/Lower -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) - Upper / Lower >> Description And Operation >> DTC U0401-68: Invalid Data Received From ECM/PCM A - Event information >> Possible Causes