Home › Land Rover › 2017 › Discovery Sport SE › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- Discovery Sport/L550 › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) › Description And Operation › DTC P06A2-13: Variable A/C Compressor Control Circuit High - Circuit open › Possible Causes