
Bad ac compressor clutch coil symptoms and how to test it. If you're getting P0645 p0646 p0647 and the ac is not working or working inconsistent or it's making noise or won't engage or disengage the ac compressor clutch coil may be need replacement.
In addition, if the ac compressor clutch coil is wobbling or fell off. It's should be replaced. Make sure to check connection and relay (sticking).