FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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P0646




P Code: P0646


Diagnostic Trouble Code (DTC) Description:

Air condition (A/C) relay, signal.

Fault Type:

Signal too low. Intermittent fault.

Signal too low. Permanent fault.


For Testing and Inspection refer to Manufacturer Code: ECM - 6000
ECM-6000