DTC P0531 Cadillac
A C Refrigerant Pressure Sensor Range Performance
A C Refrigerant Pressure Sensor Range Performance
Description
Engine started, engine running with A C requested on, and the PCM detected the Air Conditioning Pressure (ACP) sensor signal did not change at least 4 psi after the A C clutch was cycled on for 10 seconds, or after it has been cycled off for 10 seco
Cause and Solution
A C status signal circuit is open or shorted to ground
A C status signal circuit is shorted to VREF or system power
ACP sensor is damaged (sticking) or has failed
Video Guide
Diagnostic Info
- DTC Code: P0531
- Brand: Cadillac