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P06A5 2014 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit High Voltage

Quick Answer

The P06A5 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a problem with the 5 Volt Reference 4 Circuit High Voltage. Common causes include Faulty 5-volt reference circuit wiring or connectors, Short circuit in the 5-volt reference circuit, Failed sensor connected to the 5-volt reference 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 2014 Chevrolet Silverado indicates 5 Volt Reference 4 Circuit High Voltage.
Common causes
Common causes include Faulty 5-volt reference circuit wiring or connectors, Short circuit in the 5-volt reference circuit, Failed sensor connected to the 5-volt reference 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 16, 2024
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Code P06A5 2014 Chevrolet Silverado Description

The P06A5 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a problem with the 5 Volt Reference 4 Circuit High Voltage. This code is typically triggered when the Engine Control Module (ECM) detects that the voltage on the 5-volt reference circuit for a specific sensor is higher than normal. The 5-volt reference circuit is crucial for providing a stable voltage supply to various sensors and components within the vehicle's engine management system.

OBDII Code P06A5 2014 Chevrolet Silverado - 5 Volt Reference 4 Circuit High Voltage
P06A5 2014 Chevrolet Silverado Code - 5 Volt Reference 4 Circuit High Voltage

Common Causes of P06A5 2014 Chevrolet Silverado

  1. Faulty 5-volt reference circuit wiring or connectors
  2. Short circuit in the 5-volt reference circuit
  3. Failed sensor connected to the 5-volt reference circuit
  4. Issues with the Engine Control Module (ECM)
  5. Water or corrosion damage to the wiring or connectors

Symptoms of P06A5 2014 Chevrolet Silverado

  1. Check Engine Light illuminated on the dashboard
  2. Engine running rough or misfiring
  3. Reduced fuel efficiency
  4. Stalling or difficulty starting the engine
  5. Erratic behavior of engine sensors

How to Fix P06A5 2014 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the 5-volt reference circuit wiring and connectors for any signs of damage, corrosion, or loose connections.
  2. Test the sensors connected to the 5-volt reference circuit to determine if any are faulty or causing the high voltage issue.
  3. Check for any short circuits in the wiring harness that could be leading to the high voltage condition.
  4. If no visible issues are found, consider testing the Engine Control Module (ECM) for proper functioning or potential internal faults.
  5. Once the root cause is identified, repair or replace the faulty components as necessary, clear the DTC, and perform a test drive to ensure the issue has been resolved.

Cost to Fix P06A5 2014 Chevrolet Silverado

The typical repair costs for addressing a P06A5 code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as sensors, wiring harnesses, or an ECM can range from $100 to $500 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the diagnosis and repair process. Therefore, the total cost for resolving this issue could range from $200 to $1000 or more, depending on the extent of the repairs needed. It is advisable to consult with a qualified mechanic or dealership for a more accurate cost estimate based on the specific circumstances of your vehicle.

What does this mean?

Tech Notes for P06A5 2014 Chevrolet Silverado

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

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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.

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