P0652 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P0652 2017 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 2017 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 2017 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 2017 GMC Sierra code?
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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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