DTC P0530: A/C Pressure Sensor: Description

The Powertrain Control Module (PCM) monitors the high side refrigerant pressure via a 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.