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P1235 Diagnostic Trouble Code Discussion for April 2011

High Pressure Fuel Pump Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1235
Help Request Posted
2004 GMC Sierra 2500 HD 6.6L Poor Idle Quality, Hesitation, Misfire VIN: 1GTHK23154
P1235: Fuel Injector 5 Output Circuit Malfunction. ... the inlet in a couple of injectors inlet full of what looked like dirt/rust. Customer did not wanted to do all injectors at this time. Before replacing, I checked all the injectors for resistace and broken wires between FICM. When performed a cylinder bala...
April 25, 2011