A/C Refrigerant Pressure Sensor

This signal is used by the PCM in order to enable the cooling fans when the A/C compressor head pressure reaches a predetermined value. DTC P0530 sets if a fault is present in the A/C refrigerant pressure sensor circuit. The PCM disables the A/C compressor clutch when the PCM sets an A/C system DTC. Refer to the System Diagnostic Tables: A/C Refrigerant Pressure Sensor Circuit Check if the A/C refrigerant pressure sensor is stuck. Testing and Inspection