Home › Land Rover › 2014 › Range Rover HSE › Repair and Diagnosis › Quick Lookups › 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 P18A5-03: Motion/Position Sensor A Signal Circuit - FM (Frequency Modulated)/PWM (Pulse Width Modulated) failures › Possible Causes