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Engine-Codes – GMC – P0652 2017 GMC Sierra

P0652 2017 GMC Sierra Code - 5 Volt Reference 2 Circuit Low Voltage

Quick Answer

The P0652 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit, specifically low voltage. Common causes include Faulty 5 Volt Reference 2 circuit wiring, Short circuit or open circuit in the 5 Volt Reference 2 circuit, Malfunctioning 5 Volt Reference 2 sensor. 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 2017 GMC Sierra indicates 5 Volt Reference 2 Circuit Low Voltage.
Common causes
Common causes include Faulty 5 Volt Reference 2 circuit wiring, Short circuit or open circuit in the 5 Volt Reference 2 circuit, Malfunctioning 5 Volt Reference 2 sensor.
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 P0652 2017 GMC Sierra Description

The P0652 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit, specifically low voltage. The 5 Volt Reference circuit is a crucial part of the vehicle's electrical system, providing a stable 5-volt supply to various sensors and components throughout the engine and transmission systems. When the voltage on this circuit drops below the specified range, it can lead to a variety of issues that affect the vehicle's performance and functionality.

OBDII Code P0652 2017 GMC Sierra - 5 Volt Reference 2 Circuit Low Voltage
P0652 2017 GMC Sierra Code - 5 Volt Reference 2 Circuit Low Voltage

Common Causes of P0652 2017 GMC Sierra

  1. Faulty 5 Volt Reference 2 circuit wiring
  2. Short circuit or open circuit in the 5 Volt Reference 2 circuit
  3. Malfunctioning 5 Volt Reference 2 sensor
  4. Issues with the engine control module (ECM)
  5. Corrosion or poor connections in the electrical system

Symptoms of P0652 2017 GMC Sierra

  1. Engine misfires or rough idling
  2. Reduced engine power
  3. Stalling or difficulty starting the vehicle
  4. Illumination of the Check Engine Light
  5. Poor fuel efficiency

How to Fix P0652 2017 GMC Sierra

  1. Begin by performing a thorough inspection of the 5 Volt Reference 2 circuit wiring, looking for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
  2. Check the 5 Volt Reference 2 sensor for proper operation and replace it if necessary.
  3. Test the engine control module (ECM) to ensure it is functioning correctly. If the ECM is faulty, it may need to be reprogrammed or replaced.
  4. Clear the DTC from the vehicle's memory using a diagnostic scan tool and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, consult a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix P0652 2017 GMC Sierra

The typical repair costs for addressing a P0652 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new sensor or wiring harness can range from $50 to $200, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500, but it is essential to consult with a qualified mechanic for a more accurate estimate based on your vehicle's specific needs and location. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to research local rates to get a better idea of the total repair costs.

What does this mean?

Tech Notes for P0652 2017 GMC Sierra

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 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

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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 P0652 2017 GMC Sierra Code

1. What does the OBDII code P0652 mean on a 2017 GMC Sierra?

P0652 indicates a low voltage condition in the 5-volt reference circuit 2, which is used to provide power to various sensors in the vehicle.

2. What are the common symptoms of code P0652 in a 2017 GMC Sierra?

Symptoms may include the check engine light turning on, poor engine performance, engine stalling, difficulty starting, or erratic readings from sensors.

3. What causes the P0652 code to appear?

Common causes include a short to ground in the 5-volt reference circuit, a faulty sensor connected to the circuit, damaged wiring, or a malfunctioning engine control module (ECM).

4. How can I diagnose the P0652 code on my GMC Sierra?

Start by inspecting the 5-volt reference circuit wiring for damage or shorts to ground, test the sensors connected to the circuit, and use a multimeter to check the voltage output from the ECM.

5. Which sensors are typically connected to the 5-volt reference circuit 2 on a 2017 GMC Sierra?

Sensors that may use this circuit include the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and fuel pressure sensor.

6. Can a faulty sensor trigger the P0652 code?

Yes, a faulty sensor drawing excessive current or creating a short can cause the 5-volt circuit to drop in voltage, triggering the code.

7. Is it safe to drive with a P0652 code on a 2017 GMC Sierra?

Driving with this code is not recommended, as it can lead to poor engine performance, stalling, or further damage to the vehicle's electrical system.

8. How do I fix the P0652 code on my GMC Sierra?

Repairs may include replacing damaged wiring, repairing a short to ground, replacing a faulty sensor, or in rare cases, replacing the ECM if it’s malfunctioning.

9. Can a weak battery cause the P0652 code?

While unlikely, a severely low or inconsistent battery voltage can sometimes cause electrical issues, including triggering this code. Ensure the battery and charging system are in good condition.

10. What tools are needed to troubleshoot P0652 on a 2017 GMC Sierra?

You’ll need a scan tool capable of reading live data, a multimeter to check voltage and continuity, and wiring diagrams for the 5-volt reference circuit.

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