Climate Control System (HVAC) - General Information & Diagnostics DTCS: Pcm
PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action to Take |
|---|---|---|
| P0531:2F | A/C Refrigerant Pressure Sensor A Circuit Range/Performance: Signal Erratic | INSPECT the refrigerant system for leaks. Refer to ELECTRONIC LEAK DETECTION or FLUORESCENT DYE LEAK DETECTION . If refrigerant system leaks or is low, RECHARGE the refrigerant system. Refer to SPECIFICATIONS in this information. If the refrigerant system does not leak and is properly charged, INSTALL a new A/C pressure transducer. CLEAR the DTCs and REPEAT the self-test. TEST the system for normal operation. |
| P0532:16 | A/C Refrigerant Pressure Sensor A Circuit Low: Circuit Voltage Below Threshold | Go to PINPOINT TEST A . |
| P0533:17 | A/C Refrigerant Pressure Sensor A Circuit High: Circuit Voltage Above Threshold | Go to PINPOINT TEST A . |
| P0645:13 | A/C Clutch Relay Control Circuit: Circuit Open | Go to PINPOINT TEST B . |
| P0646:11 | A/C Clutch Relay Control Circuit Low: Circuit Short To Ground | Go to PINPOINT TEST B . |
| P0647:12 | A/C Clutch Relay Control Circuit High: Circuit Short To Battery | Go to PINPOINT TEST B . |
| All Other DTCs | - | Refer to ENGINE EMISSION CONTROL . |