Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> Transmission >> Transfer Case >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) >> Description And Operation >> DTC P0666-12: Control Module Internal Temperature Sensor "A" Circuit - Circuit short to battery >> Possible Causes