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Engine-Codes – Chevrolet – P0653 2018 Chevrolet Silverado

P0653 2018 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit High Voltage

Quick Answer

The P0653 diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates that there is a high voltage condition in the 5-volt reference 2 circuit. Common causes include Short circuit in the 5-volt reference 2 circuit, Faulty sensor drawing excessive current, ECM malfunction. 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 2018 Chevrolet Silverado indicates 5 Volt Reference 2 Circuit High Voltage.
Common causes
Common causes include Short circuit in the 5-volt reference 2 circuit, Faulty sensor drawing excessive current, ECM malfunction.
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 11, 2024
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Code P0653 2018 Chevrolet Silverado Description

The P0653 diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates that there is a high voltage condition in the 5-volt reference 2 circuit. This code is typically related to an issue with the 5-volt reference circuit that provides a stable 5-volt supply to various sensors and components in the vehicle's engine management system. When the voltage in this circuit is higher than normal, it can cause disruptions in the operation of sensors and lead to performance issues in the vehicle.

OBDII Code P0653 2018 Chevrolet Silverado - 5 Volt Reference 2 Circuit High Voltage
P0653 2018 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit High Voltage

Common Causes of P0653 2018 Chevrolet Silverado

  1. Short circuit in the 5-volt reference 2 circuit
  2. Faulty sensor drawing excessive current
  3. ECM malfunction
  4. Wiring harness issues
  5. Corrosion or poor connections in the circuit

Symptoms of P0653 2018 Chevrolet Silverado

  1. Rough idling or stalling
  2. Poor acceleration or hesitation
  3. Engine misfires
  4. Check engine light illuminated
  5. Reduced fuel efficiency

How to Fix P0653 2018 Chevrolet Silverado

  1. Perform a visual inspection of the wiring harness and connectors in the 5-volt reference 2 circuit to check for any visible damage or corrosion.
  2. Use a multimeter to test the voltage in the circuit and identify any areas where the voltage is higher than normal.
  3. Check the sensors connected to the 5-volt reference 2 circuit for any signs of malfunction or excessive current draw.
  4. Replace any faulty sensors or components that are causing the high voltage condition.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0653 2018 Chevrolet Silverado

The typical repair costs for addressing a P0653 DTC in a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of parts for this repair can range from $50 to $200, while the labor involved may take 1-2 hours, costing between $80 and $300. This brings the total estimated cost to around $130 to $500. However, it's important to note that prices can vary based on factors such as location, dealership rates, and the extent of the repair needed. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P0653 2018 Chevrolet Silverado

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 2018 Chevrolet Silverado Code

1. What does the OBDII code P0653 mean on a 2018 Chevrolet Silverado?

P0653 indicates a high voltage issue in the 5-volt reference 2 circuit, which supplies voltage to certain sensors in the vehicle.

2. What are the common symptoms of code P0653 on a 2018 Chevrolet Silverado?

Symptoms may include the check engine light turning on, erratic engine performance, sensor malfunctions, or issues with components like the throttle or fuel system.

3. What causes the P0653 code to appear on a 2018 Chevrolet Silverado?

Common causes include a short to voltage in the 5-volt reference circuit, a faulty sensor, damaged wiring, or a malfunctioning powertrain control module (PCM).

4. Can I drive my 2018 Chevrolet Silverado with a P0653 code?

Driving with a P0653 code is not recommended as it can affect engine performance and potentially cause further damage to the vehicle's electrical systems.

5. How do I diagnose the P0653 code on my 2018 Chevrolet Silverado?

Start by using a scan tool to confirm the code, then visually inspect the wiring and connectors for damage or corrosion. Test the 5-volt reference circuit for proper voltage with a multimeter.

6. What sensors are affected by the 5-volt reference 2 circuit in a 2018 Chevrolet Silverado?

Sensors such as the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, or fuel pressure sensor may rely on the 5-volt reference circuit.

7. How can I fix the P0653 code on my 2018 Chevrolet Silverado?

Repairs may involve fixing or replacing damaged wiring, cleaning corroded connectors, replacing a faulty sensor, or reprogramming or replacing the PCM if necessary.

8. How much does it cost to repair a P0653 code on a 2018 Chevrolet Silverado?

Repair costs can vary widely, from $50 for minor wiring repairs to $500 or more if the PCM or multiple sensors need replacement.

9. Can a weak battery cause a P0653 code on a 2018 Chevrolet Silverado?

While unlikely, a weak or failing battery can cause voltage irregularities that may indirectly contribute to electrical issues, including triggering the P0653 code.

10. Does the P0653 code require a software update for the PCM in a 2018 Chevrolet Silverado?

In some cases, a PCM software update may resolve the issue if it's related to a known glitch, but this depends on the specific circumstances and should be confirmed by a professional mechanic.

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