|
Just a note about PO300 codes.PO300 is random cylinder misfire.In other words the ECM doesn't know which cylinder is misfiring.PO301 is misfire cylinder #1.PO302 is cylinder misfire cylinder#2.PO303 for cylinder #3 And so on.These codes usually trigger another code.Code # varies depending on severety of misfire.Rule of thumb is always record then erase codes found during diagnosis.Roadtest the vehicle until light comes back on. Perform diagnosis again, then address the lowest code first.Example:Codes PO300 and PO1320 come back.Repair for code PO300 first and chances are PO1320 will not return.
Good luck
|