A/C Refrigerant Pressure Sensor Signal

The A/C refrigerant pressure sensor signal indicates high side refrigerant pressure to the PCM. The PCM uses this information to adjust the idle air control valve to compensate for the higher engine loads present with high A/C refrigerant pressures and to control the cooling fans. A fault in the A/C refrigerant pressure sensor signal will cause DTC P0530 to set. Refer to System Diagnosis / Diagnostic Tables / Diagnostic Trouble Code Tables / DTC P0530 A/C Refrigerant Pressure Sensor Circuit. Testing and Inspection