AutoCodes – Chevrolet – P06A3 Chevrolet

P06A3 Chevrolet Code - 5 Volt Reference 4 Circuit

Quick Answer

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection. 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 Chevrolet indicates 5 Volt Reference 4 Circuit.
Common causes: Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection.
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 Popularity 3,160

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P06A3 Chevrolet Description

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Each internal reference circuit provides external 5 Volt reference circuits for more than one sensor. A short to ground or short to voltage on one external 5 Volt reference circuit can affect all the components connected to the same internal 5 Volt reference circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage or ground on any of the 5 Volt reference circuits for greater than 0.5 s.

OBDII Code P06A3 Chevrolet - 5 Volt Reference 4 Circuit - AutoCodes.com — P06A3 Chevrolet Code - 5 Volt Reference 4 Circuit

What does this mean?

What are the Possible Causes of the DTC P06A3 Chevrolet?

Faulty Sensor on 5 Volt circuit
Sensor on 5 Volt circuit harness is open or shorted
Sensor on 5 Volt circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P06A3 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P06A3 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P06A3 Chevrolet code?

Need more information on how to fix the P06A3 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P06A3 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P06A3 2014 Chevrolet Silverado — 5 Volt Reference 4 Circuit
P06A3 2015 Chevrolet Silverado — 5 Volt Reference 4 Circuit
P06A3 2016 Chevrolet Silverado — 5 Volt Reference 4 Circuit
P06A3 2017 Chevrolet Silverado — 5 Volt Reference 4 Circuit
P06A3 2018 Chevrolet Silverado — 5 Volt Reference 4 Circuit

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.

Frequently Asked Questions about P06A3 Chevrolet Code

1. What is OBDII code P06A3 Chevrolet indicating?

The OBDII code P06A3 in Chevrolet vehicles refers to a fault with the 5 Volt Reference 4 Circuit.

2. What are common symptoms of the P06A3 trouble code?

Common symptoms associated with the P06A3 code include engine stalling, rough idling, poor acceleration, and potential issues with various sensors.

3. What can cause the P06A3 code to trigger in a Chevrolet vehicle?

The P06A3 code is often triggered by a faulty 5 Volt Reference 4 Circuit, damaged wiring or connectors, or a malfunction in the engine control module (ECM).

4. How can I diagnose the P06A3 code in my Chevrolet?

Diagnosing the P06A3 code typically involves using a scan tool to retrieve the trouble code, checking the 5 Volt Reference 4 Circuit for continuity, inspecting wiring for damage, and testing the ECM.

5. What are the possible repair options for the P06A3 code?

Repair options for the P06A3 code may include repairing or replacing damaged wiring, connectors, or sensors related to the 5 Volt Reference 4 Circuit, as well as reprogramming or replacing the ECM if necessary.

6. Can driving with the P06A3 code present cause further damage to my Chevrolet?

Continuing to drive with the P06A3 code present can potentially cause further damage to the vehicle, especially if the underlying issue is related to the ECM or critical engine sensors.

7. Is it safe to clear the P06A3 trouble code and continue driving my Chevrolet?

While clearing the code may temporarily turn off the check engine light, it's important to diagnose and repair the underlying issue causing the P06A3 code to prevent potential drivability issues and further damage.

8. How much does it typically cost to repair the P06A3 code in a Chevrolet?

The cost of repairing the P06A3 code in a Chevrolet can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can I fix the P06A3 trouble code in my Chevrolet myself, or do I need a professional mechanic?

While some DIY enthusiasts may be able to diagnose and repair the P06A3 code themselves, it's recommended to consult a professional mechanic, especially for complex electrical or ECM-related issues.

10. Will the P06A3 code cause my Chevrolet to fail an emissions test?

Yes, if the P06A3 code is present during an emissions test, it may cause your Chevrolet to fail the test due to potential issues with the 5 Volt Reference 4 Circuit affecting the vehicle's emissions control system.