AutoCodes – Chevrolet – P06A6 2016 Chevrolet Silverado

P06A6 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado 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 348
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 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 short to voltage or ground on any of the 5 Volt reference circuits for greater than 0.5 s.
OBDII Code P06A6 2016 Chevrolet Silverado - 5V Reference 1 Performance - AutoCodes.com
P06A6 2016 Chevrolet Silverado Code - 5V Reference 1 Performance

What are the Possible Causes of the DTC P06A6 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 P06A6 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P06A6 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 P06A6 2016 Chevrolet Silverado code?

Need more information on how to fix the P06A6 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P06A6 2016 Chevrolet Silverado Code

What does OBDII code P06A6 mean for a 2016 Chevrolet Silverado?

Code P06A6 indicates a performance issue with the 5V Reference 1 circuit, which is responsible for supplying a stable 5-volt signal to certain sensors in the vehicle.

What are common symptoms of code P06A6 in a Silverado?

Symptoms may include the check engine light illuminating, erratic engine performance, sensor failures, or issues with components relying on the 5V reference signal.

What causes the P06A6 code to appear?

Possible causes include a short or open circuit in the 5V Reference 1 wiring, a faulty sensor, a damaged engine control module (ECM), or electrical interference.

How can I diagnose the P06A6 code on my Silverado?

Use a diagnostic scanner to confirm the code, inspect the wiring and connectors for damage, check the sensors using the 5V reference signal, and test the ECM for proper functionality.

Can a faulty ECM cause the P06A6 code?

Yes, a malfunctioning ECM can disrupt the 5V reference signal and trigger the P06A6 code.

What sensors rely on the 5V Reference 1 circuit in the Silverado?

These sensors may include the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and other critical components related to engine management.

Is it safe to drive with code P06A6?

Driving with this code may lead to reduced performance or erratic behavior, but prolonged use could cause further damage to related components. Address the issue promptly.

How do I fix the P06A6 code on a 2016 Silverado?

Start by inspecting and repairing damaged wiring or connectors in the 5V Reference 1 circuit, replacing any faulty sensors, and testing the ECM for proper operation.

Will clearing the code solve the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be fixed to prevent the code from returning.

Can low battery voltage cause the P06A6 code?

While unlikely, electrical issues such as low voltage or poor grounding can interfere with the 5V reference circuit and contribute to this code.

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