Home >> Land Rover >> 2020 >> Defender 110 SE >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Transfer Case Control Module (TCCM) (G2400921) >> Description And Operation >> Transfer Case Control Module (TCCM) >> DTC P18A5-03: Motion/Position Sensor "A" Signal Circuit - FM (Frequency Modulated)/PWM (Pulse Width Modulated) failures >> Possible Causes