P0651 2017 GMC Sierra Code - 5 Volt Reference 2 Circuit
Quick Answer
The P0651 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to a problem with the 5 Volt Reference 2 Circuit. Common causes include Short circuit in the wiring, Open circuit in the wiring, Faulty ECM. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0651 2017 GMC Sierra indicates 5 Volt Reference 2 Circuit.
- Common causes
- Common causes include Short circuit in the wiring, Open circuit in the wiring, Faulty ECM.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0651 2017 GMC Sierra Description
The P0651 diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to a problem with the 5 Volt Reference 2 Circuit. In modern vehicles, the Engine Control Module (ECM) provides a 5-volt reference voltage to various sensors and components throughout the vehicle. This reference voltage is crucial for the proper operation of these sensors and components.
Common Causes of P0651 2017 GMC Sierra
- Short circuit in the wiring
- Open circuit in the wiring
- Faulty ECM
- Corrosion or damage to connectors
- Malfunctioning sensor or component
Symptoms of P0651 2017 GMC Sierra
- Check Engine Light illuminated
- Erratic engine performance
- Poor fuel efficiency
- Stalling or hesitation during acceleration
- Issues with other sensors or components that rely on the 5-volt reference voltage
How to Fix P0651 2017 GMC Sierra
- Perform a visual inspection of the wiring, connectors, and components related to the 5 Volt Reference 2 Circuit.
- Test the voltage levels in the circuit using a multimeter to identify any abnormalities.
- Check for continuity in the wiring to ensure there are no breaks or shorts.
- Replace any damaged wiring, connectors, or components as needed.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0651 2017 GMC Sierra
The cost of repairing a P0651 code on a 2017 GMC Sierra can vary depending on the exact cause of the issue and the extent of the repairs needed. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total cost of repairing a P0651 code is typically between $150 and $500. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
Tech Notes for P0651 2017 GMC Sierra
The 5 Volt reference 2 circuit provides 5 Volt to the following sensors: (Some models may have different sensors, please consult the factory service manual for the list of sensors for your model and year)
- Brake pedal position sensor
- Crankshaft position sensor
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