DTC Descriptors
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic procedure supports the following DTCs:
- DTC P0645 Air Conditioning (A/C) Clutch Relay Control Circuit
- DTC P0646 Air Conditioning (A/C) Clutch Relay Control Circuit Low Voltage
- DTC P0647 Air Conditioning (A/C) Clutch Relay Control Circuit High Voltage