P06A5 GMC 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 GMC 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.
Code P06A5 GMC Description
What are the Possible Causes of the DTC P06A5 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 P06A5 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.
Code Tech Notes
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 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 P06A5 GMC code?
Need more information on how to fix the P06A5 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P06A5 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P06A5 2014 GMC Sierra — 5 Volt Reference 4 Circuit High Voltage
- P06A5 2015 GMC Sierra — 5 Volt Reference 4 Circuit High Voltage
- P06A5 2016 GMC Sierra — 5 Volt Reference 4 Circuit High Voltage
- P06A5 2017 GMC Sierra — 5 Volt Reference 4 Circuit High Voltage
- P06A5 2018 GMC Sierra — 5 Volt Reference 4 Circuit High Voltage
Frequently Asked Questions about P06A5 GMC Code
What does the OBDII code P06A5 mean for a GMC vehicle?
Code P06A5 indicates a problem with the 5 Volt Reference 4 Circuit, specifically that the voltage is higher than expected.
What are the common symptoms of code P06A5 in GMC vehicles?
Symptoms may include a check engine light, erratic engine performance, poor fuel economy, and issues with sensor readings.
What causes the P06A5 code in GMC vehicles?
Common causes include a short circuit, faulty sensor, damaged wiring, or a malfunctioning Engine Control Module (ECM).
Can a faulty sensor trigger the P06A5 code?
Yes, a sensor that relies on the 5 Volt Reference 4 Circuit, such as a throttle position sensor or MAP sensor, may cause this code if it malfunctions.
How can I diagnose the P06A5 code on my GMC vehicle?
Inspect the wiring and connectors for damage, check the affected sensors for faults, and use a multimeter to verify voltage readings on the 5 Volt Reference Circuit.
Is it safe to drive a GMC vehicle with the P06A5 code?
Driving with this code may lead to poor engine performance and potential damage to other components. It’s best to address the issue promptly.
How do I fix the P06A5 code on a GMC vehicle?
Repairs may include replacing damaged wiring, fixing short circuits, replacing faulty sensors, or reprogramming/replacing the ECM.
Can a damaged ECM cause the P06A5 code?
Yes, a malfunctioning ECM may improperly regulate the 5 Volt Reference Circuit and trigger this code.
What tools are required to troubleshoot the P06A5 code?
You’ll need an OBDII scanner, a multimeter, and possibly wiring diagrams for your vehicle to diagnose the issue effectively.
Does the P06A5 code affect multiple sensors on a GMC vehicle?
Yes, multiple sensors may rely on the 5 Volt Reference 4 Circuit, and a problem with this circuit can affect their functionality.
Discuss the causes and fixes for P06A5 GMC OBDII Code
Code P06A5 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
