Engine-Codes.com
Engine-Codes – GMC – P06A5 2016 GMC Sierra

P06A5 2016 GMC Sierra Code - 5 Volt Reference 4 Circuit High Voltage

Quick Answer

The P06A5 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the 5 Volt Reference 4 Circuit High Voltage. Common causes include Short circuit in the 5 Volt Reference 4 Circuit, Faulty sensor connected to the circuit, Wiring or connector issues in the circuit. 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
P06A5 2016 GMC Sierra indicates 5 Volt Reference 4 Circuit High Voltage.
Common causes
Common causes include Short circuit in the 5 Volt Reference 4 Circuit, Faulty sensor connected to the circuit, Wiring or connector issues in the circuit.
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 15, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P06A5 2016 GMC Sierra Description

The P06A5 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the 5 Volt Reference 4 Circuit High Voltage. In modern vehicles, the Engine Control Module (ECM) provides a 5-volt reference signal to various sensors and components throughout the vehicle. This reference voltage is crucial for the proper functioning of these sensors and components, as it allows them to accurately measure and report data to the ECM.

OBDII Code P06A5 2016 GMC Sierra - 5 Volt Reference 4 Circuit High Voltage
P06A5 2016 GMC Sierra Code - 5 Volt Reference 4 Circuit High Voltage

Common Causes of P06A5 2016 GMC Sierra

  1. Short circuit in the 5 Volt Reference 4 Circuit
  2. Faulty sensor connected to the circuit
  3. Wiring or connector issues in the circuit
  4. ECM malfunction
  5. Water or corrosion damage to the circuit components

Symptoms of P06A5 2016 GMC Sierra

  1. Rough idling
  2. Stalling
  3. Poor acceleration
  4. Decreased fuel efficiency
  5. Engine misfires

How to Fix P06A5 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the 5 Volt Reference 4 Circuit, checking for any visible signs of damage or corrosion.
  2. Test the sensors connected to the circuit to determine if any of them are faulty and need replacement.
  3. Inspect the wiring and connectors in the circuit for any signs of wear, fraying, or loose connections. Repair or replace as necessary.
  4. If no visible issues are found, use a multimeter to test the voltage on the circuit and identify the source of the high voltage.
  5. Clear the DTC and reset the ECM to see if the issue has been resolved. If the code persists, further diagnostics may be needed to pinpoint the exact cause of the high voltage.

Cost to Fix P06A5 2016 GMC Sierra

The typical repair costs for addressing a P06A5 code can vary depending on the specific cause of the issue. In general, parts for this repair may range from $50 to $200, while labor costs can add another $100 to $300 to the total bill. Keep in mind that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates charged by the auto repair shop. It's recommended to obtain quotes from multiple shops to compare prices and ensure a fair deal.

What does this mean?

Tech Notes for P06A5 2016 GMC Sierra

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

Need more information about the P06A5 2016 GMC Sierra code?

Need more information on how to fix the P06A5 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P06A5 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P06A5 2016 GMC Sierra Code

No Frequently Asked Questions about P06A5 2016 GMC Sierra Code found.

Discuss the causes and fixes for P06A5 2016 GMC Sierra OBDII Code

Submit a New Comment

Code P06A5 2016 GMC Sierra comments

No comments found for this page.