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Engine-Codes – GMC – P0653 2016 GMC Sierra

P0653 2016 GMC Sierra Code - 5 Volt Reference 2 Circuit High Voltage

Quick Answer

The P0653 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit High Voltage. Common causes include Short circuit in the 5-volt reference circuit, Faulty sensor or component connected to the circuit, Damaged wiring harness. 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 2016 GMC Sierra indicates 5 Volt Reference 2 Circuit High Voltage.
Common causes
Common causes include Short circuit in the 5-volt reference circuit, Faulty sensor or component connected to the circuit, Damaged wiring harness.
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 2016 GMC Sierra Description

The P0653 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the 5 Volt Reference 2 Circuit High Voltage. This code is typically triggered when the Engine Control Module (ECM) detects that the voltage on the 5-volt reference circuit is higher than normal. The 5-volt reference circuit is essential for various sensors and components in the vehicle to operate correctly. When this circuit's voltage is too high, it can lead to erratic sensor readings, incorrect fuel delivery, and other issues that can affect the vehicle's performance and drivability.

OBDII Code P0653 2016 GMC Sierra - 5 Volt Reference 2 Circuit High Voltage
P0653 2016 GMC Sierra Code - 5 Volt Reference 2 Circuit High Voltage

Common Causes of P0653 2016 GMC Sierra

  1. Short circuit in the 5-volt reference circuit
  2. Faulty sensor or component connected to the circuit
  3. Damaged wiring harness
  4. Malfunctioning Engine Control Module (ECM)
  5. Corrosion or poor connections in the circuit

Symptoms of P0653 2016 GMC Sierra

  1. Check Engine Light illuminated on the dashboard
  2. Rough idling or engine misfires
  3. Reduced fuel efficiency
  4. Hesitation or lack of power during acceleration
  5. Stalling or difficulty starting the engine

How to Fix P0653 2016 GMC Sierra

  1. Begin by using a diagnostic scanner to retrieve the trouble codes and identify the specific cause of the high voltage condition.
  2. Inspect the wiring harness connected to the 5-volt reference circuit for any signs of damage, corrosion, or poor connections. Repair or replace as needed.
  3. Test the sensors and components connected to the circuit to determine if any are faulty. Replace any defective parts.
  4. Check the ECM for proper operation and reprogram or replace if necessary.
  5. Clear the trouble codes from the ECM's memory and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0653 2016 GMC Sierra

The typical repair costs for addressing a P0653 code on a 2016 GMC Sierra can range from $100 to $500, depending on the specific cause of the issue and the parts and labor required for the repair. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops often charge less. For a more accurate estimate, it's recommended to consult with local auto repair shops.

What does this mean?

Tech Notes for P0653 2016 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 2016 GMC Sierra Code

1. What does the OBDII code P0653 mean on a 2016 GMC Sierra?

P0653 indicates a "5 Volt Reference 2 Circuit High Voltage" issue, meaning the voltage in the reference circuit is higher than the expected 5 volts.

2. What are the symptoms of code P0653 in a 2016 GMC Sierra?

Common symptoms include the check engine light turning on, poor engine performance, rough idling, or intermittent stalling.

3. What causes the P0653 code in a GMC Sierra?

Possible causes include a short to voltage in the 5-volt reference circuit, a malfunctioning sensor, damaged wiring, or a faulty Engine Control Module (ECM).

4. Can I drive my 2016 GMC Sierra with the P0653 code?

While driving may still be possible, it’s not recommended as the issue can cause erratic engine behavior and may lead to further damage.

5. How do I troubleshoot the P0653 code on my GMC Sierra?

Start by inspecting the wiring and connectors in the 5-volt reference circuit for damage or corrosion, then test related sensors and the ECM for faults.

6. Which sensors are linked to the 5-volt reference circuit in a 2016 GMC Sierra?

Sensors such as the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and others may share the 5-volt reference circuit.

7. What tools are needed to diagnose the P0653 code?

A multimeter, an OBDII scanner, and the vehicle’s wiring diagram are essential for diagnosing the issue.

8. How much does it cost to fix the P0653 code?

Repair costs vary, but fixing wiring issues might cost $100-$300, while replacing an ECM can range from $500 to $1,500.

9. Can a faulty ECM cause the P0653 code in my 2016 GMC Sierra?

Yes, a faulty ECM can incorrectly regulate the voltage in the 5-volt reference circuit, triggering the P0653 code.

10. How can I prevent the P0653 code from reoccurring?

Regularly inspect and maintain the vehicle’s wiring, connectors, and sensors to prevent issues with the 5-volt reference circuit.

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