Home >> Land Rover >> 2014 >> Range Rover Base >> Repair and Diagnosis >> General Information >> DTC Index >> 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 P18A4-13: Motion/Position Sensor Power Circuit - Circuit open >> Possible Causes