Home >> Land Rover >> 2017 >> Discovery SE >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: HVAC Control Module (HVAC) -- Discovery/L462 >> Diagnostic Trouble Code Index DTC: HVAC Control Module (HVAC) >> Description And Operation >> DTC B1DC2-77: Low Pressure Refrigerant Control valve 5 - Commanded position not reachable >> Possible Causes