AutoCodes – GMC – P02F1 GMC

P02F1 GMC Code - Cylinder 4 Injector Circuit Range/Performance

Quick Answer

During normal conditions, the Engine Control Module (ECM) turns the Fuel Injectors ON and OFF in the Fuel Injection System. Common causes include Dirty Fuel Injector 4, Faulty Fuel Injector 4, Plugged Fuel Injector 4. 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: P02F1 GMC indicates Cylinder 4 Injector Circuit Range/Performance.
Common causes: Common causes include Dirty Fuel Injector 4, Faulty Fuel Injector 4, Plugged Fuel Injector 4.
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 1,291

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 Apr 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P02F1 GMC Description

During normal conditions, the Engine Control Module (ECM) turns the Fuel Injectors ON and OFF in the Fuel Injection System. The ECM sets the OBDII code when it has detected that the Fuel Injector is not working as designed.

OBDII Code P02F1 GMC - Cylinder 4 Injector Circuit Range/Performance - AutoCodes.com — P02F1 GMC Code - Cylinder 4 Injector Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P02F1 GMC?

Dirty Fuel Injector 4
Faulty Fuel Injector 4
Plugged Fuel Injector 4
Fuel Injector #4 harness is open or shorted
Fuel Injector #4 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P02F1 GMC?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P02F1 GMC 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 P02F1 GMC code?

Need more information on how to fix the P02F1 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P02F1 GMC code diagnosed by a professional: Find a repair shop in your area

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 P02F1 GMC Code

1. What are the common symptoms of OBDII code P02F1 in a GMC vehicle?

The common symptoms may include rough idling, reduced engine performance, misfires, and in some cases, the Check Engine Light may illuminate.

2. What can cause the OBDII code P02F1 related to the Cylinder 4 Injector Circuit in a GMC?

Possible causes of this code may include a faulty fuel injector, wiring issues in the injector circuit, a clogged fuel injector, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the Cylinder 4 Injector Circuit Range/Performance issue in my GMC?

Diagnosis involves using a scan tool to check for the specific code, testing the fuel injector, inspecting the wiring for any damage, and verifying the ECM's functionality.

4. Can a dirty fuel injector cause the P02F1 code in a GMC?

Yes, a clogged or dirty fuel injector can disrupt the injector's performance, leading to the P02F1 code due to improper fuel delivery to the cylinder.

5. What are some repair tips for addressing the Cylinder 4 Injector Circuit Range/Performance code in a GMC?

Repair tips may include cleaning or replacing the fuel injector, repairing any damaged wiring, ensuring proper electrical connections, and resetting the ECM after repairs.

6. Is it safe to drive with the P02F1 code present in a GMC?

It is not recommended to drive with the P02F1 code, as it can lead to further engine damage and reduced performance. It's best to address the issue promptly.

7. How much does it typically cost to repair the Cylinder 4 Injector Circuit Range/Performance problem in a GMC?

The cost of repair can vary depending on the specific issue, but it may range from a few hundred to a few thousand dollars, considering parts and labor.

8. Does the P02F1 code always mean the fuel injector itself is faulty in a GMC?

While a faulty fuel injector is a common cause of this code, other factors like wiring issues or ECM problems can also trigger the P02F1 code in a GMC.

9. Can a DIY enthusiast fix the Cylinder 4 Injector Circuit Range/Performance issue in a GMC?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following proper diagnostic procedures and repair guides.

10. How urgent is it to address the P02F1 code related to the Cylinder 4 Injector Circuit in a GMC?

It is advisable to address the P02F1 code promptly to prevent potential engine damage, poor fuel efficiency, and further complications with the vehicle's performance.