Possible causes – Accelerator Pedal Position Sensor 1-2 harness is open or shorted – Accelerator Pedal Position Sensor 1-2)circuit poor electrcila connection – Faulty Accelerator Pedal Position Sensor 1-2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Accelerator Pedal Position Sensor 1-2 harness is open or shorted – Accelerator Pedal Position Sensor 1-2)circuit poor electrcila connection – Faulty Accelerator Pedal Position Sensor 1-2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Accelerator Pedal Position Sensor 1-2 harness is open or shorted – Accelerator Pedal Position Sensor 1-2)circuit poor electrcila connection – Faulty Accelerator Pedal Position Sensor 1-2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Possible causes – Faulty air fuel ratio (A/F) sensor 1 heater Bank 1 – Air fuel ratio (A/F) harness is open or shorted– Air fuel ratio (A/F) circuit poor electrical connection When is the code detected? The A/F signal computed
Possible causes – Faulty air fuel ratio (A/F) sensor 1 heater Bank 1 – Air fuel ratio (A/F) harness is open or shorted– Air fuel ratio (A/F) circuit poor electrical connection When is the code detected? The A/F signal computed
Possible causes Harness or connectors (The A/F sensor 1 circuit is open or shorted.) Air fuel ratio (A/F) sensor 1 When is the code detected? The A/F signal computed by ECM from the A/F sensor 1 (Bank 1) signal is
BUICK Technical Service Bulletins for P1271 code 2004 BUICK RAINIER ELECTRICAL SYSTEM 2004 BUICK RAINIER ELECTRICAL SYSTEM 2004 BUICK RAINIER POWER TRAIN 2005 BUICK RAINIER POWER TRAIN
P1271 DODGE – Radiator Temp Sens Volts Too Low
P1271 FORD – Cylinder #1 High To Low Side Open