DTC P0530: A/C Refrigerant Pressure Sensor Circuit: Description

PCM monitors the high side refrigerant pressure via the A/C refrigerant pressure sensor. When pressure is high, signal voltage is high. When pressure is low, signal voltage is low. When pressure is high, PCM commands the cooling fans on. When pressure is too high or too low, PCM will not allow the A/C compressor clutch to engage.