P1277 CHEVROLET - Accelerator Pedal Position Sensor 1 Circuit Low Voltage
P1277 CHEVROLET Possible Causes
- Faulty Accelerator Pedal Position (APP)
- Accelerator Pedal Position harness is open or shorted
- Accelerator Pedal Position circuit poor electrical connection
First diagnose P1277 CHEVROLET code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
Cost of diagnosing the P1277 CHEVROLET code
Labor: 1.0The cost of diagnosing the P1277 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the P1277 CHEVROLET code detected?The Engine Control Module (ECM) detected a voltage below 0.2 volts or above 4.25 volts on the APP signal
P1277 CHEVROLET Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1277 Chevrolet DescriptionThe Accelerator Pedal Position (APP) sensors are located within the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted to the accelerator pedal bracket. There are 3 individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used in order to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.
P1277 CHEVROLET More InformationNeed more information on how to fix the P1277 CHEVROLET code?
Get Access to Factory Service Manuals
Need more help?Get the P1277 Chevrolet code diagnosed by a professional: Find a repair shop in your area
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