P1223 Diagnostic Trouble Code Discussion for February 2011
Fuel Injector 1 Output Circuit Malfunction
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| Help Request | Posted | |
| 2004 Chevrolet Silverado 3500 6.6L Misfire VIN: 1GBJC34224 P1223: Fuel Injector 1 Output Circuit Malfunction. I have a duramax with a p1223 that i can't seem to get a definitive diag.replaced #1 injector-old one did not fire most of the time-and was good for about a month.now code has returned.have a hard time blaming injector as it was a new g.m. Unit.any and all hel... |
February 07, 2011 |
