Home >> Land Rover >> 2021 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Tailgate Control Module (TGCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Tailgate Control Module (TGCM) - Upper/Lower (G2016287) >> DTC U0401-68: Invalid Data Received From ECM/PCM A - Event information >> Possible Causes