AutoCodes – GMC – P0265 2014 GMC Sierra

P0265 2014 GMC Sierra Code - Cylinder 2 Injector Control Circuit High 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: P0265 2014 GMC Sierra indicates Cylinder 2 Injector Control Circuit High 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 180

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 P0265 2014 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 voltage for greater than 2 s.

OBDII Code P0265 2014 GMC Sierra - Cylinder 2 Injector Control Circuit High Voltage - AutoCodes.com — P0265 2014 GMC Sierra Code - Cylinder 2 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0265 2014 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 P0265 2014 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 P0265 2014 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 P0265 2014 GMC Sierra code?

Need more information on how to fix the P0265 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0265 2014 GMC Sierra Code

What does the OBDII code P0265 mean for a 2014 GMC Sierra?

P0265 indicates that the powertrain control module (PCM) has detected a high voltage condition in the cylinder 2 fuel injector control circuit.

What are the common symptoms of code P0265 in a 2014 GMC Sierra?

Symptoms may include reduced engine performance, misfiring, poor fuel economy, rough idling, or the illumination of the check engine light.

What causes the P0265 code to appear?

Possible causes include a faulty cylinder 2 fuel injector, damaged or corroded wiring, a short circuit, a faulty PCM, or a poor electrical connection in the injector circuit.

Can a bad fuel injector trigger the P0265 code?

Yes, a faulty or stuck cylinder 2 fuel injector can cause high voltage in the control circuit, triggering the P0265 code.

How do I diagnose the P0265 code in my GMC Sierra?

Diagnosis involves inspecting the injector wiring and connectors for damage, testing the injector with a multimeter, and using a scan tool to monitor voltage levels in the control circuit.

Can I drive my 2014 GMC Sierra with the P0265 code?

Driving with this code is not recommended as it can lead to poor engine performance, increased emissions, and further damage to the engine or fuel system.

How do I fix the P0265 code on a 2014 GMC Sierra?

Repairs may include replacing the cylinder 2 fuel injector, repairing or replacing damaged wiring or connectors, or, in rare cases, replacing the PCM if it's faulty.

How much does it cost to repair a P0265 code?

The repair cost depends on the issue, but replacing a fuel injector typically costs $200â€“$500, while wiring repairs or PCM replacement may vary.

Can a weak battery cause the P0265 code?

While unlikely, a weak battery or charging system issue can sometimes cause voltage irregularities, so it's worth checking to rule this out.

Do I need a professional mechanic to fix the P0265 code?

While some experienced DIYers can handle basic repairs, diagnosing and repairing injector circuit issues often requires specialized tools and expertise, so consulting a professional is recommended.