Engine-CodesChevrolet – P06A3 2015 Chevrolet Silverado

P06A3 2015 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit

Quick Answer

The P06A3 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a problem with the 5 Volt Reference 4 Circuit. Common causes include Wiring harness issues, Damaged connectors, Faulty ECM/PCM. 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 2015 Chevrolet Silverado indicates 5 Volt Reference 4 Circuit.
Common causes
Common causes include Wiring harness issues, Damaged connectors, Faulty ECM/PCM.
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.
Table of contents Created and updated by William Orellana on Sep 20, 2024
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Code P06A3 2015 Chevrolet Silverado Description

The P06A3 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado refers to a problem with the 5 Volt Reference 4 Circuit. In modern vehicles, the Engine Control Module (ECM) or Powertrain Control Module (PCM) provides various reference voltages to sensors and components throughout the vehicle to ensure proper operation. The 5 Volt Reference 4 Circuit specifically supplies a 5-volt reference signal to certain sensors and components, allowing them to function correctly.

OBDII Code P06A3 2015 Chevrolet Silverado - 5 Volt Reference 4 Circuit
P06A3 2015 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit

Common Causes of P06A3 2015 Chevrolet Silverado

  1. Wiring harness issues
  2. Damaged connectors
  3. Faulty ECM/PCM
  4. Defective sensor drawing excessive current

Symptoms of P06A3 2015 Chevrolet Silverado

  1. Check Engine Light illuminated
  2. Poor acceleration
  3. Rough idling
  4. Stalling
  5. Reduced fuel efficiency

How to Fix P06A3 2015 Chevrolet Silverado

  1. Perform a thorough inspection of the wiring harness and connectors for any damage or corrosion.
  2. Test the ECM/PCM to ensure it is functioning properly.
  3. Check the sensors connected to the 5 Volt Reference 4 Circuit for any faults.
  4. Replace any damaged wiring, connectors, ECM/PCM, or sensors as needed.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P06A3 2015 Chevrolet Silverado

The cost of repairing a 5 Volt Reference 4 Circuit issue can vary depending on the specific cause of the problem and the extent of the damage. In general, the cost of parts for this repair can range from $50 to $300, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $600. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for more accurate pricing.

Tech Notes for P06A3 2015 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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