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P06A3 2017 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit

Quick Answer

The P06A3 diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates a problem with the 5 Volt Reference 4 Circuit. Common causes include Faulty 5-volt reference circuit wiring, Short circuit in the 5-volt reference circuit, Failed 5-volt reference voltage regulator. 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 Chevrolet Silverado indicates 5 Volt Reference 4 Circuit.
Common causes
Common causes include Faulty 5-volt reference circuit wiring, Short circuit in the 5-volt reference circuit, Failed 5-volt reference voltage regulator.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P06A3 2017 Chevrolet Silverado Description

The P06A3 diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates a problem with the 5 Volt Reference 4 Circuit. This circuit is responsible for providing a stable 5-volt reference voltage to various sensors and components within the vehicle's engine management system. When this circuit malfunctions, it can lead to a range of issues affecting the vehicle's performance and drivability.

OBDII Code P06A3 2017 Chevrolet Silverado - 5 Volt Reference 4 Circuit
P06A3 2017 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit

Common Causes of P06A3 2017 Chevrolet Silverado

  1. Faulty 5-volt reference circuit wiring
  2. Short circuit in the 5-volt reference circuit
  3. Failed 5-volt reference voltage regulator
  4. Corrosion or poor connections in the circuit
  5. ECM malfunction

Symptoms of P06A3 2017 Chevrolet Silverado

  1. Engine misfires
  2. Rough idling
  3. Stalling
  4. Reduced engine performance
  5. Check Engine Light illuminated

How to Fix P06A3 2017 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the 5-volt reference circuit wiring, looking for any signs of damage, corrosion, or loose connections.
  2. Check for any short circuits in the circuit that may be causing the issue.
  3. Test the 5-volt reference voltage regulator to ensure it is functioning correctly. Replace if necessary.
  4. Clear the DTC from the ECM memory using a diagnostic scan tool after completing the repairs.
  5. Perform a test drive to confirm that the issue has been resolved and that the vehicle is operating normally.

Cost to Fix P06A3 2017 Chevrolet Silverado

The typical repair costs for addressing a P06A3 DTC in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts for this repair could range from $50 to $200, while labor costs may range from $100 to $300. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P06A3 2017 Chevrolet Silverado

Disconnecting one component at a time from the affected 5 Volt reference circuit while observing the scan tool 5 Volt Reference Circuit Status parameter may help locate the fault. The scan tool parameter will change from Malfunction to OK when the source of the fault is disconnected. If all 5 Volt reference components have been disconnected and a fault is still indicated, the fault may exist in the wiring harness.



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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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