AutoCodes – Chevrolet – P06A5 2016 Chevrolet Silverado

P06A5 2016 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit High Voltage

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: P06A5 2016 Chevrolet Silverado indicates 5 Volt Reference 4 Circuit High Voltage.
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 197

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 P06A5 2016 Chevrolet Silverado 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 higher than the expected voltage on any of the 5 Volt reference circuits for greater than 0.5 s.

OBDII Code P06A5 2016 Chevrolet Silverado - 5 Volt Reference 4 Circuit High Voltage - AutoCodes.com — P06A5 2016 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P06A5 2016 Chevrolet Silverado?

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 P06A5 2016 Chevrolet Silverado?

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 P06A5 2016 Chevrolet Silverado 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 P06A5 2016 Chevrolet Silverado code?

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

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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.

Frequently Asked Questions about P06A5 2016 Chevrolet Silverado Code

1. What does the OBDII code P06A5 mean on a 2016 Chevrolet Silverado?

P06A5 indicates a "5 Volt Reference 4 Circuit High Voltage" issue, meaning the 5-volt reference signal from the engine control module (ECM) is higher than expected.

2. What are the common symptoms of code P06A5 on a 2016 Chevrolet Silverado?

Symptoms can include illuminated check engine light, poor engine performance, hard starting, stalling, or erratic operation of sensors relying on the 5-volt reference.

3. What causes code P06A5 to appear on a 2016 Chevrolet Silverado?

Common causes include a short to voltage in the 5-volt reference circuit, a faulty sensor, damaged wiring, a malfunctioning ECM, or corrosion at electrical connections.

4. Can a bad sensor trigger code P06A5 on a 2016 Chevrolet Silverado?

Yes, a faulty sensor that uses the 5-volt reference, such as a throttle position sensor or manifold absolute pressure sensor, can cause this code.

5. How do I diagnose code P06A5 on a 2016 Chevrolet Silverado?

Start by checking the wiring and connectors for damage or corrosion, inspect sensors on the 5-volt circuit, and use a multimeter to test for high voltage levels in the circuit.

6. Is code P06A5 on a 2016 Chevrolet Silverado serious?

Yes, it can affect engine performance and drivability. Ignoring it may lead to further damage or unsafe driving conditions.

7. Can I drive my 2016 Chevrolet Silverado with code P06A5?

Driving is not recommended, as the issue can cause erratic engine behavior or failure. Itâ€™s best to diagnose and repair the problem promptly.

8. How do I fix code P06A5 on a 2016 Chevrolet Silverado?

Repairs may include fixing or replacing damaged wiring, cleaning corroded connectors, replacing faulty sensors, or, in rare cases, replacing the ECM.

9. How much does it cost to fix code P06A5 on a 2016 Chevrolet Silverado?

Repair costs vary depending on the issue, but sensor replacement can range from $100 to $300, while ECM replacement can cost $500 or more.

10. Can a faulty ECM cause code P06A5 on a 2016 Chevrolet Silverado?

Yes, a malfunctioning ECM can improperly regulate the 5-volt reference circuit, leading to this code. However, this is less common than wiring or sensor issues.