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Engine-Codes – GMC – P0653 2015 GMC Sierra

P0653 2015 GMC Sierra Code - 5 Volt Reference 2 Circuit High Voltage

Quick Answer

The P0653 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit High Voltage. Common causes include Short Circuit: A short circuit in the wiring or a faulty sensor/component can cause the voltage on the 5 Volt Reference 2 Circuit to spike, Faulty Sensor: A malfunctioning sensor that is connected to the 5 Volt Reference 2 Circuit can cause the voltage to be higher than normal, Wiring Issues: Corroded or damaged wiring connecting the sensors to the ECM/PCM can lead to high voltage readings. 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
P0653 2015 GMC Sierra indicates 5 Volt Reference 2 Circuit High Voltage.
Common causes
Common causes include Short Circuit: A short circuit in the wiring or a faulty sensor/component can cause the voltage on the 5 Volt Reference 2 Circuit to spike, Faulty Sensor: A malfunctioning sensor that is connected to the 5 Volt Reference 2 Circuit can cause the voltage to be higher than normal, Wiring Issues: Corroded or damaged wiring connecting the sensors to the ECM/PCM can lead to high voltage readings.
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 P0653 2015 GMC Sierra Description

The P0653 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit High Voltage. In modern vehicles, the Engine Control Module (ECM) or Powertrain Control Module (PCM) sends out a 5-volt reference signal to various sensors and components throughout the vehicle. This signal is used by these sensors and components to provide crucial data to the ECM/PCM for proper engine operation, emissions control, and overall vehicle performance.

OBDII Code P0653 2015 GMC Sierra - 5 Volt Reference 2 Circuit High Voltage
P0653 2015 GMC Sierra Code - 5 Volt Reference 2 Circuit High Voltage

Common Causes of P0653 2015 GMC Sierra

  1. Short Circuit: A short circuit in the wiring or a faulty sensor/component can cause the voltage on the 5 Volt Reference 2 Circuit to spike.
  2. Faulty Sensor: A malfunctioning sensor that is connected to the 5 Volt Reference 2 Circuit can cause the voltage to be higher than normal.
  3. Wiring Issues: Corroded or damaged wiring connecting the sensors to the ECM/PCM can lead to high voltage readings.
  4. ECM/PCM Malfunction: In rare cases, a malfunction in the ECM/PCM itself can cause the P0653 code to appear.
  5. Aftermarket Accessories: Installation of aftermarket accessories or modifications to the vehicle's electrical system can sometimes trigger this code.

Symptoms of P0653 2015 GMC Sierra

  1. Check Engine Light: The most common symptom associated with the P0653 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Engine Misfires: High voltage on the 5 Volt Reference 2 Circuit can cause engine misfires, rough idling, and overall poor engine performance.
  3. Poor Fuel Economy: The ECM/PCM may not be able to properly adjust fuel delivery, leading to decreased fuel efficiency.
  4. Stalling: In severe cases, the vehicle may stall or have difficulty starting due to the high voltage issue.
  5. Loss of Power: The engine may experience a loss of power or acceleration due to incorrect sensor readings.

How to Fix P0653 2015 GMC Sierra

  1. Diagnose the Issue: Use a scan tool to read the code and perform a thorough inspection of the wiring, sensors, and components connected to the 5 Volt Reference 2 Circuit.
  2. Repair or Replace Faulty Components: Identify and repair any short circuits, replace faulty sensors, or repair damaged wiring as needed.
  3. Clear the Code: After making the necessary repairs, clear the code from the ECM/PCM memory using the scan tool.
  4. Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the Check Engine Light does not reappear.
  5. Preventative Maintenance: Regularly inspect and maintain the vehicle's electrical system to prevent future issues with the 5 Volt Reference circuits.

Cost to Fix P0653 2015 GMC Sierra

The typical repair costs for addressing a P0653 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as sensors or wiring harnesses can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500. It's important to note that these are rough estimates, and actual costs may vary based on the location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

What does this mean?

Tech Notes for P0653 2015 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 P0653 2015 GMC Sierra Code

1. What does OBDII code P0653 for a 2015 GMC Sierra mean?

Code P0653 indicates a high voltage condition in the 5 Volt Reference 2 Circuit of the vehicle's engine control module (ECM).

2. What are the common symptoms of OBDII code P0653 in a 2015 GMC Sierra?

Common symptoms include issues with engine performance, such as stalling, rough idling, or difficulty starting the vehicle. The check engine light may also be illuminated.

3. What are the possible causes of OBDII code P0653 in a 2015 GMC Sierra?

Potential causes include a faulty ECM, a short circuit in the 5 Volt Reference 2 Circuit, damaged wiring or connectors, or a failed sensor connected to the circuit.

4. How can I diagnose OBDII code P0653 in a 2015 GMC Sierra?

Diagnosis typically involves using a scan tool to read the code and then inspecting the wiring, connectors, and sensors associated with the 5 Volt Reference 2 Circuit for any visible damage or issues.

5. Can I still drive my 2015 GMC Sierra with OBDII code P0653?

It is not recommended to continue driving the vehicle with code P0653 present, as it can affect engine performance and potentially lead to further damage. It's best to address the issue promptly.

6. How can I repair OBDII code P0653 in a 2015 GMC Sierra?

Repair options may include replacing the ECM, repairing any damaged wiring or connectors, or replacing any faulty sensors connected to the 5 Volt Reference 2 Circuit.

7. Is OBDII code P0653 in a 2015 GMC Sierra a serious issue?

While the severity of the issue can vary, it is important to address code P0653 promptly to prevent potential damage to the engine or other components of the vehicle.

8. How much does it cost to fix OBDII code P0653 in a 2015 GMC Sierra?

The cost of repair can vary depending on the underlying cause of the code. It is advisable to consult a mechanic for a proper diagnosis and an accurate estimate.

9. Can I reset OBDII code P0653 in a 2015 GMC Sierra myself?

While you can clear the code using an OBDII scan tool, it is recommended to address the root cause of the issue first to prevent the code from reappearing.

10. Are there any preventive measures to avoid OBDII code P0653 in a 2015 GMC Sierra?

Regular vehicle maintenance, such as checking and replacing sensors and inspecting wiring harnesses, can help prevent issues like code P0653 from occurring.

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