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Engine-Codes – GMC – P0264 2018 GMC Sierra

P0264 2018 GMC Sierra Code - Cylinder 2 Injector Control Circuit Low Voltage

Quick Answer

The P0264 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates an issue with the Cylinder 2 Injector Control Circuit experiencing low voltage. Common causes include Faulty fuel injector in Cylinder 2, Wiring issues or poor electrical connections in the injector control circuit, Malfunctioning engine control module (ECM). 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
P0264 2018 GMC Sierra indicates Cylinder 2 Injector Control Circuit Low Voltage.
Common causes
Common causes include Faulty fuel injector in Cylinder 2, Wiring issues or poor electrical connections in the injector control circuit, Malfunctioning engine control module (ECM).
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 17, 2024
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Code P0264 2018 GMC Sierra Description

The P0264 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates an issue with the Cylinder 2 Injector Control Circuit experiencing low voltage. In a fuel-injected engine, each cylinder has its own fuel injector responsible for delivering the precise amount of fuel needed for combustion. The injector control circuit is a crucial component that regulates the injector's operation by providing the necessary voltage for fuel delivery.

OBDII Code P0264 2018 GMC Sierra - Cylinder 2 Injector Control Circuit Low Voltage
P0264 2018 GMC Sierra Code - Cylinder 2 Injector Control Circuit Low Voltage

Common Causes of P0264 2018 GMC Sierra

  1. Faulty fuel injector in Cylinder 2
  2. Wiring issues or poor electrical connections in the injector control circuit
  3. Malfunctioning engine control module (ECM)
  4. Corrosion or damage to the injector control circuit components
  5. Issues with the fuel system, such as low fuel pressure or clogged fuel injectors

Symptoms of P0264 2018 GMC Sierra

  1. Rough idling or engine misfires
  2. Decreased fuel efficiency
  3. Engine stalling or hesitation during acceleration
  4. Illumination of the Check Engine Light
  5. Reduced overall engine performance

How to Fix P0264 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the injector in Cylinder 2, checking for any signs of damage or malfunction.
  2. Inspect the wiring and connections in the injector control circuit, looking for any loose connections, frayed wires, or corrosion that may be affecting voltage delivery.
  3. Test the engine control module (ECM) to ensure it is functioning correctly and communicating with the injector control circuit.
  4. If necessary, replace the faulty fuel injector in Cylinder 2 and clear the DTC from the ECM.
  5. After completing the repairs, perform a test drive to verify that the issue has been resolved and that the vehicle is running smoothly.

Cost to Fix P0264 2018 GMC Sierra

The typical repair costs for addressing a P0264 code in a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a fuel injector or repairing wiring/connectivity issues can range from $150 to $500, including parts and labor. However, additional diagnostic time and labor rates at auto repair shops can influence the final cost. It's recommended to consult with a qualified mechanic or dealership to obtain a more accurate estimate based on your location and vehicle specifications.

What does this mean?

Tech Notes for P0264 2018 GMC Sierra

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

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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 P0264 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P0264 in a 2018 GMC Sierra related to the Cylinder 2 Injector Control Circuit Low Voltage?

The common symptoms include rough idling, misfiring in cylinder 2, loss of power, and potential stalling of the engine.

2. What are the possible causes of OBDII code P0264 in a 2018 GMC Sierra indicating a low voltage in the Cylinder 2 Injector Control Circuit?

Potential causes include issues with the fuel injector itself, wiring problems in the injector circuit, a faulty PCM (Powertrain Control Module), or a poor electrical connection.

3. How can I diagnose the Cylinder 2 Injector Control Circuit Low Voltage issue in my 2018 GMC Sierra triggering code P0264?

You can diagnose the problem by checking the wiring harness for any damage, testing the injector resistance, inspecting the connectors for corrosion, and using a scan tool to monitor injector operation.

4. Can a dirty fuel injector cause OBDII code P0264 in a 2018 GMC Sierra to appear?

Yes, a dirty or clogged fuel injector can disrupt the proper functioning of the injector control circuit, leading to low voltage and triggering code P0264.

5. What steps can I take to repair OBDII code P0264 in my 2018 GMC Sierra related to the Cylinder 2 Injector Control Circuit Low Voltage?

Repair steps may include cleaning or replacing the fuel injector, repairing damaged wiring, ensuring proper electrical connections, or replacing the PCM if necessary.

6. Is it safe to continue driving my 2018 GMC Sierra with OBDII code P0264 indicating low voltage in the Cylinder 2 Injector Control Circuit?

It is not recommended to drive your vehicle with this issue as it can lead to further damage, decreased performance, and potential engine problems. It's best to address the problem promptly.

7. Can a faulty spark plug cause OBDII code P0264 to trigger in a 2018 GMC Sierra?

While a faulty spark plug can cause misfiring in a cylinder, it is not typically the direct cause of the Cylinder 2 Injector Control Circuit Low Voltage issue indicated by code P0264.

8. How much does it cost to repair OBDII code P0264 in a 2018 GMC Sierra at a mechanic or dealership?

The cost of repair can vary depending on the exact cause of the issue and the rates of the service provider. It's recommended to get a diagnostic inspection to determine the specific repair needed.

9. Can I reset the OBDII code P0264 in my 2018 GMC Sierra by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it is not a permanent solution. It's important to address the underlying issue causing the code to prevent it from reoccurring.

10. Will OBDII code P0264 in a 2018 GMC Sierra cause the Check Engine light to illuminate?

Yes, the presence of code P0264 related to the Cylinder 2 Injector Control Circuit Low Voltage will typically trigger the Check Engine light to illuminate on the vehicle's dashboard.

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