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Posted on Jan 02, 2017
Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: EVAP Vent Solenoid Control Circuit Malfunction Possible Causes:
Base engine mechanical fault that affects one or more cylindersFuel delivery component fault that affects more than 1 cylinderEVAP system problem or the EVAP canister is fuel saturatedEGR valve is stuck open or PCV system has a vacuum leakIgnition system fault (a coil) that affects more than one cylinderTSB 03-06-04-030 contains a repair procedure for this codeTSB 03-06-04-041 contains a repair procedure for this codeTrouble Code: P0449
Vent solenoid control circuit is open or shorted to groundVent solenoid control circuit is shorted to system power (B+)Vent solenoid power circuit is open (test the ENG1 fuse)Vent solenoid is damaged or has failedPCM has failed
Multiple Cylinder Misfire Detected
EVAP Vent Solenoid Control Circuit Malfunction
Posted on Dec 12, 2012
Tips for a great answer:
Sep 10, 2014 | 2002 Chevrolet Blazer
May 23, 2014 | 2000 Nissan Altima
Oct 23, 2013 | 2002 Chevrolet Avalanche
Nov 16, 2011 | 2002 Isuzu Trooper
Dec 24, 2010 | 2002 Nissan Altima
Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
Dec 14, 2010 | 2001 Chevrolet Impala
Feb 17, 2010 | 2003 Chevrolet Silverado 1500
Sep 05, 2009 | 2002 Chevrolet Blazer
Nov 06, 2008 | 2002 Chevrolet Silverado 1500
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