× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1223 Diagnostic Trouble Code Discussion for February 2011

Fuel Injector 1 Output Circuit Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1223
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