P0652 2018 GMC Sierra Code - 5 Volt Reference 2 Circuit Low 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
- P0652 2018 GMC Sierra indicates 5 Volt Reference 2 Circuit Low 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 P0652 2018 GMC Sierra Description
What are the Possible Causes of the DTC P0652 2018 GMC Sierra?
- 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 P0652 2018 GMC Sierra?
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 2 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)
- Brake pedal position sensor
- Crankshaft position sensor
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0652 2018 GMC Sierra 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 P0652 2018 GMC Sierra code?
Need more information on how to fix the P0652 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0652 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0652 2018 GMC Sierra Code
1. What does the OBDII code P0652 mean on a 2018 GMC Sierra?
P0652 indicates a low voltage condition in the 5-volt reference 2 circuit, which provides a stable voltage signal to various sensors in the vehicle.
2. What are the symptoms of code P0652 in a 2018 GMC Sierra?
Common symptoms include poor engine performance, reduced fuel efficiency, engine stalling, or the illumination of the check engine light.
3. What causes the P0652 code to appear?
Possible causes include a shorted sensor, damaged wiring or connectors in the 5-volt reference circuit, or a faulty engine control module (ECM).
4. Can a faulty sensor trigger the P0652 code?
Yes, a faulty sensor that uses the 5-volt reference circuit can cause a short to ground, leading to the low voltage condition.
5. How do I diagnose the P0652 code on my 2018 GMC Sierra?
Start by checking the wiring and connectors in the 5-volt reference 2 circuit for damage or corrosion, then test the voltage at the circuit with a multimeter.
6. Which sensors rely on the 5-volt reference 2 circuit in a 2018 GMC Sierra?
Sensors that may use this circuit include the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and fuel pressure sensor.
7. Can I continue driving my 2018 GMC Sierra with the P0652 code?
Driving is not recommended, as this code can cause poor performance or stalling, potentially leading to unsafe driving conditions.
8. What repairs can fix the P0652 code?
Repairs might include replacing a shorted sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a faulty ECM.
9. How much does it typically cost to fix the P0652 code?
Repair costs vary but can range from $50 for a simple wiring fix to several hundred dollars if a sensor or ECM needs replacement.
10. Can a weak battery cause the P0652 code on a 2018 GMC Sierra?
While unlikely, a weak or failing battery can sometimes cause voltage issues that may contribute to this code. It’s worth checking the battery and charging system.
Discuss the causes and fixes for P0652 2018 GMC Sierra OBDII Code
Code P0652 2018 GMC Sierra 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.
