Home >> Land Rover >> 2013 >> LR2 Base >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Parking Aid Control Module (PACM) -- LR2/L359 >> Diagnostic Trouble Code Index DTC: Parking Aid Control Module (PACM) >> Description And Operation >> DTC U0100-87: Lost Communication With ECM/PCM "A" - Missing message >> Possible Causes