AutoCodes – GMC – P06A6 GMC

P06A6 GMC Code - 5V Reference 1 Performance

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
P06A6 GMC indicates 5V Reference 1 Performance.
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 1,840
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 23, 2022
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Code P06A6 GMC 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 P06A6 GMC - 5V Reference 1 Performance - AutoCodes.com
P06A6 GMC Code - 5V Reference 1 Performance

What are the Possible Causes of the DTC P06A6 GMC?

  • 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 P06A6 GMC?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P06A6 GMC 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 P06A6 GMC code?

Need more information on how to fix the P06A6 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P06A6 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 P06A6 GMC Code

1. What are the common symptoms of OBDII code P06A6 GMC (5V Reference 1 Performance)?

- Common symptoms include engine stalling, rough idling, poor acceleration, and possibly the illumination of the Check Engine light.

2. What can cause the OBDII code P06A6 GMC to trigger?

- The code P06A6 GMC (5V Reference 1 Performance) can be triggered by issues such as a faulty 5V reference circuit, damaged wiring, or a defective sensor.

3. How serious is the OBDII code P06A6 GMC (5V Reference 1 Performance)?

- While the severity can vary, it is important to address this code promptly to prevent potential drivability issues and further damage to the vehicle.

4. How can I diagnose the OBDII code P06A6 GMC?

- Diagnosing this code typically involves using a diagnostic scanner to read the code, inspecting the 5V reference circuit, checking for wiring issues, and testing relevant sensors for proper operation.

5. What are some DIY repair tips for addressing code P06A6 GMC?

- DIY repair tips may include checking and repairing any damaged wiring, ensuring proper sensor connections, and, if necessary, replacing the faulty sensor or component causing the issue.

6. Can driving with the OBDII code P06A6 GMC present cause further damage?

- Continuing to drive with this code present can potentially lead to more severe drivability issues or damage to other components, so it is recommended to address it promptly.

7. Will resetting the OBDII code P06A6 GMC make it go away permanently?

- Simply resetting the code may temporarily clear the Check Engine light, but if the underlying issue causing the code is not fixed, it is likely to reappear.

8. Is it safe to ignore the OBDII code P06A6 GMC if the vehicle is running fine?

- Ignoring the code is not recommended as it can indicate an underlying problem that may worsen over time, potentially leading to more costly repairs.

9. How much does it typically cost to repair the OBDII code P06A6 GMC?

- The cost of repairs for this code can vary depending on the specific cause, but it may involve expenses for diagnostics, parts replacement, and labor.

10. Can a mechanic easily fix the OBDII code P06A6 GMC, or does it require specialized knowledge?

- A mechanic with experience in diagnosing and repairing OBDII codes should be able to effectively address the P06A6 GMC code, as it may require troubleshooting skills and knowledge of automotive electrical systems.

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