Possible causes Fuel injector No. 7 output circuit short to voltage. Injector. NG Module. Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1277 Description Indicates a high voltage condition exists at the injector output of the NG
DODGE Technical Service Bulletins for P1277 code 2006 DODGE RAM ELECTRICAL SYSTEM
P1277 FORD – Cylinder #7 High To Low Side Open
P1277 GMC – Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1277 BUICK – Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1277 CADILLAC – Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1277 CHEVROLET – Accelerator Pedal Position Sensor 1 Circuit Low Voltage