P06A3 2017 GMC Sierra Code - 5 Volt Reference 4 Circuit
Quick Answer
The P06A3 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates a problem with the 5 Volt Reference 4 Circuit. Common causes include Short circuit in the wiring harness, Faulty throttle position sensor, Corrosion or poor connection at the sensor terminals. 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
- P06A3 2017 GMC Sierra indicates 5 Volt Reference 4 Circuit.
- Common causes
- Common causes include Short circuit in the wiring harness, Faulty throttle position sensor, Corrosion or poor connection at the sensor terminals.
- 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 P06A3 2017 GMC Sierra Description
The P06A3 diagnostic trouble code (DTC) in a 2017 GMC Sierra indicates a problem with the 5 Volt Reference 4 Circuit. In modern vehicles, the Engine Control Module (ECM) provides 5 volts to various sensors and components to ensure they function properly. The 5 Volt Reference 4 Circuit specifically supplies voltage to sensors such as the throttle position sensor, fuel tank pressure sensor, and more.
Common Causes of P06A3 2017 GMC Sierra
- Short circuit in the wiring harness
- Faulty throttle position sensor
- Corrosion or poor connection at the sensor terminals
- ECM malfunction
- Water intrusion into the sensor connectors
Symptoms of P06A3 2017 GMC Sierra
- Engine stalling or rough idling
- Reduced fuel efficiency
- Check Engine Light illuminated
- Loss of power during acceleration
- Inaccurate gauge readings
How to Fix P06A3 2017 GMC Sierra
- Begin by conducting a thorough visual inspection of the wiring harness and sensor connectors to check for any visible damage, corrosion, or loose connections.
- Use a multimeter to test the voltage output of the 5 Volt Reference 4 Circuit at various points to pinpoint the location of the fault.
- Test the sensors connected to the circuit, such as the throttle position sensor, to determine if they are functioning correctly.
- Replace any damaged wiring, connectors, or sensors as needed.
- Clear the DTC from the ECM memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P06A3 2017 GMC Sierra
The typical repair costs for addressing a P06A3 code can vary depending on the specific cause of the issue. In general, parts such as sensors or wiring harnesses may range from $50 to $200, while labor costs can add another $100 to $300. Overall, the total repair cost may fall between $150 and $500. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from local shops for a more accurate estimate.
Tech Notes for P06A3 2017 GMC Sierra
The 5 Volt reference 4 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)
- Accelerator pedal position sensor 1
- Throttle position sensor
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