Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> 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 C2006-31: Left Actuator - No signal >> Possible Causes