AutoCodes – GMC – P0264 2018 GMC Sierra

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

Quick Answer

The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. Common causes include Dirty Fuel Injector 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2. 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 Dirty Fuel Injector 2, Faulty Fuel Injector 2, Plugged Fuel Injector 2.
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 Popularity 212

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0264 2018 GMC Sierra Description

The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector control circuit is shorted to ground for greater than 2 s.

OBDII Code P0264 2018 GMC Sierra - Cylinder 2 Injector Control Circuit Low Voltage - AutoCodes.com — P0264 2018 GMC Sierra Code - Cylinder 2 Injector Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0264 2018 GMC Sierra?

Dirty Fuel Injector 2
Faulty Fuel Injector 2
Plugged Fuel Injector 2
Fuel Injector #2 harness is open or shorted
Fuel Injector #2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0264 2018 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0264 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0264 2018 GMC Sierra code?

Need more information on how to fix the P0264 2018 GMC Sierra code? Get Access to Factory Service Manuals

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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.