Description
OBD-II Trouble Code Description for P0646 GMC
A/C Clutch Relay Control Circuit Low
What does this mean?
OBD2 Code P0646 GM definition:
A/C clutch relay may also be referred to as A/C compressor clutch relay. A/C clutch relay circuit is monitored when ignition is on and battery voltage is greater than 10.4 volts.
Symptoms
Possible sumptoms of OBD code P0646 GM
– Engine Light ON (or Service Engine Soon Warning Light)
Causes
Possible causes of OBD code P0646 GM
– Open or short air condition clutch relay circuit – Poor air condition clutch relay electrical connection – Failed air condition clutch relay The Error code is generally activated on detection of the following conditions: Code P0646 GM may be stored if an open or short exists in A/C clutch relay control circuit.
Possible Solutions
The OBD2 Code Information Be Applicable For GMC:
2013 GMC Terrain Denali,2013 GMC Acadia,2011 GMC Sierra All Terrain HD Concept,2010 GMC Terrain,2010 GMC Granite Concept,2009 GMC Sierra Hybrid Crew Cab,2008 GMC Yukon Hybrid,2008 GMC Denali XT Concept,2007 GMC Yukon XL,2007 GMC Yukon Denali,2007 GMC Yukon,2007 GMC Sierra Denali,2007 GMC Sierra Classic,2007 GMC Sierra 3500 HD SLT Crew Cab,2007 GMC Sierra 2500 HD SLT Extended Cab,2007 GMC Sierra,2007 GMC Acadia,2005 GMC Sierra Denali 1500 Crew Cab,2005 GMC Graphyte Concept,2005 GMC Envoy XL Denali,2005 GMC Envoy Denali
Note:
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