2006 nissan titan 5.6 se..codes po420 and po 300

Asked by goldennellie Aug 12, 2013 at 06:41 PM about the 2006 Nissan Titan SE King Cab 4WD

Question type: Maintenance & Repair

limp mode only..i need help..

1 Answer
13,505

Fordtudor37 answered 11 years ago

Did you try looking up the codes online ? Try www.TitanTalk.com or www.check-engine-light.com for assistance on that vehicle specifically. •P0420 Catalyst System Efficiency Below Threshold (Bank 1), •P0300 Random/Multiple Cylinder Misfire Detected - - Random Misfire problems can be fixed by simply replacing plugs, wires, and coils. Typically those are the first things to check. Other things to check normally include the fuel injectors themselves, then your O2 sensors. There are quite a few things to check - compression, valves, intake manifold gasket, etc. and if you aren't up to the task it might be better off to take it to an experienced, trusted technician for a proper diagnosis, even if you perform the repair yourself.

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