P1241 Diagnostic Trouble Code Discussion for September 2011
Fuel Injector 7 Output Circuit Malfunction
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| Help Request | Posted | |
| 2004 GMC Sierra 2500 HD 6.6L Poor Idle Quality, Misfire VIN: 1GTHK23264 P1241: Fuel Injector 7 Output Circuit Malfunction. Truck makes loud knocking noise and puffs thick black smoke. Sounds like detonation knock. Used modis to manually shut down injectors found that when injector number 2 was disabled the knocking stopped and the smoking stopped. Checked wiring at FICM and a inje... |
September 02, 2011 |
