P0531 OBD Trouble Code

1 result found

P0531 - GM
Type Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description

A/C Refrigerant Pressure Sensor Performance Conditions
Cause

Engine running, then the PCM detected that the A/C Refrigerant pressure did not change by more than 4 psi with the A/C clutch cycled from off to on, condition met for less than 10 seconds.

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