P0652 2018 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit Low Voltage
Quick Answer
The P0652 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the 5-volt reference 2 circuit registering low voltage. Common causes include Short Circuit: A short circuit in the 5-volt reference circuit can cause the voltage to drop below the expected range, Faulty Sensor: A sensor that is drawing too much current from the 5-volt reference circuit can lead to low voltage readings, ECM Issues: Problems with the Engine Control Module (ECM) can also trigger the P0652 code. 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 Chevrolet Silverado indicates 5 Volt Reference 2 Circuit Low Voltage.
- Common causes
- Common causes include Short Circuit: A short circuit in the 5-volt reference circuit can cause the voltage to drop below the expected range, Faulty Sensor: A sensor that is drawing too much current from the 5-volt reference circuit can lead to low voltage readings, ECM Issues: Problems with the Engine Control Module (ECM) can also trigger the P0652 code.
- 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.
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Code P0652 2018 Chevrolet Silverado Description
The P0652 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the 5-volt reference 2 circuit registering low voltage. The 5-volt reference circuit is crucial for the proper functioning of various sensors and components in the vehicle. In this case, the Engine Control Module (ECM) sends out a 5-volt reference signal to sensors like the throttle position sensor, manifold absolute pressure sensor, and others. When the ECM detects that the voltage on this circuit is lower than expected, it triggers the P0652 code.
Common Causes of P0652 2018 Chevrolet Silverado
- Short Circuit: A short circuit in the 5-volt reference circuit can cause the voltage to drop below the expected range.
- Faulty Sensor: A sensor that is drawing too much current from the 5-volt reference circuit can lead to low voltage readings.
- ECM Issues: Problems with the Engine Control Module (ECM) can also trigger the P0652 code.
- Ground Connection: A faulty ground connection can disrupt the proper functioning of the 5-volt reference circuit.
Symptoms of P0652 2018 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with the P0652 code is the illumination of the check engine light on the vehicle's dashboard.
- Poor Performance: The vehicle may experience a decrease in performance, including sluggish acceleration and rough idling.
- Reduced Fuel Efficiency: A drop in fuel efficiency may occur due to incorrect sensor readings.
- Stalling: In severe cases, the engine may stall unexpectedly while driving.
- Rough Shifting: Transmission issues, such as rough shifting or hesitation, may also be observed.
How to Fix P0652 2018 Chevrolet Silverado
- Diagnose the Issue: Use a scan tool to retrieve the trouble codes and perform a thorough inspection of the 5-volt reference circuit to identify the exact cause of the low voltage.
- Check Wiring and Connections: Inspect the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
- Test Sensors: Test the sensors connected to the 5-volt reference circuit to determine if any are faulty and drawing excessive current.
- Check ECM: Verify the functionality of the Engine Control Module (ECM) to ensure it is sending out the correct reference voltage.
- Clear Codes and Test Drive: After making the necessary repairs, clear the trouble codes from the ECM memory and take the vehicle for a test drive to confirm that the issue has been resolved.
Cost to Fix P0652 2018 Chevrolet Silverado
The typical repair costs for addressing a P0652 code in a 2018 Chevrolet Silverado can range from $100 to $500, depending on the exact cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often offer lower rates. For a more accurate estimate, it's recommended to obtain quotes from local auto repair shops.
Tech Notes for P0652 2018 Chevrolet Silverado
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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