AutoCodes – GMC – P0262 2017 GMC Sierra

P0262 2017 GMC Sierra Code - Cylinder 1 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 1, Faulty Fuel Injector 1, Plugged Fuel Injector 1. 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: P0262 2017 GMC Sierra indicates Cylinder 1 Injector Control Circuit High Voltage.
Common causes: Common causes include Dirty Fuel Injector 1, Faulty Fuel Injector 1, Plugged Fuel Injector 1.
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 177

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 P0262 2017 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 P0262 2017 GMC Sierra - Cylinder 1 Injector Control Circuit High Voltage - AutoCodes.com — P0262 2017 GMC Sierra Code - Cylinder 1 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0262 2017 GMC Sierra?

Dirty Fuel Injector 1
Faulty Fuel Injector 1
Plugged Fuel Injector 1
Fuel Injector #1 harness is open or shorted
Fuel Injector #1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0262 2017 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 P0262 2017 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 P0262 2017 GMC Sierra code?

Need more information on how to fix the P0262 2017 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 P0262 2017 GMC Sierra Code

What does the OBDII code P0262 mean on a 2017 GMC Sierra?

The P0262 code indicates that the fuel injector control circuit for cylinder 1 is experiencing abnormally high voltage.

What are the common symptoms of a P0262 code in a 2017 GMC Sierra?

Symptoms may include rough idling, reduced engine performance, misfires, poor fuel economy, and an illuminated check engine light.

What causes the P0262 code on a 2017 GMC Sierra?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning powertrain control module (PCM), or excessive resistance in the circuit.

Can I drive my 2017 GMC Sierra with the P0262 code?

While the truck may still be drivable, it’s not recommended to continue driving with this code as it can lead to further engine damage or poor performance.

How is the P0262 code diagnosed in a 2017 GMC Sierra?

A mechanic will use a scan tool to confirm the code, inspect the wiring and connectors for cylinder 1’s injector, test the injector itself, and check for PCM-related issues.

How can I fix the P0262 code on my 2017 GMC Sierra?

Repairs may involve replacing the faulty fuel injector, repairing damaged wiring or connectors, cleaning the injector circuit, or reprogramming or replacing the PCM if necessary.

How much does it cost to fix a P0262 code on a 2017 GMC Sierra?

The repair cost can vary; replacing a fuel injector typically ranges from $200 to $500, while wiring repairs or PCM replacement may cost more, depending on labor and parts.

Can a dirty fuel injector cause the P0262 code?

Yes, a clogged or dirty injector can increase electrical resistance and potentially trigger the P0262 code. Cleaning the injector may resolve the issue.

Is the P0262 code specific to cylinder 1 on a 2017 GMC Sierra?

Yes, the P0262 code specifically refers to the injector control circuit for cylinder 1, which is the first cylinder in the engine’s firing order.

What tools are needed to troubleshoot the P0262 code on a 2017 GMC Sierra?

Common tools include an OBDII scan tool, a multimeter to test voltage and resistance, and possibly an injector tester to check the fuel injector's functionality.