What is OBD-II Code P02F7 – Cylinder 10 Injector Circuit Range/Performance

OBD-II Code P02F7 – Cylinder 10 Injector Circuit Range/Performance: An Overview

As a car owner or driver, it is essential to understand the significance of the On-Board Diagnostic (OBD) system in your vehicle. This system is designed to detect and report any issues affecting your car’s performance, and can be accessed through the OBD-II port located under or near the dashboard of your car. When the OBD system detects a problem, it generates a fault code that can be read and analyzed by a professional mechanic using a diagnostic scanner. One such code is P02F7, which indicates a problem with the injector circuit in cylinder 10 of the engine. This article will explain what this code means, the symptoms it can cause, and how it can be fixed.

Symptoms of OBD-II Code P02F7

Before we delve into the details of the code, it’s essential to understand the symptoms that come with it. When this code is triggered, you may experience some or all of the following symptoms:

1. Reduced fuel efficiency: A faulty injector in cylinder 10 can cause a significant reduction in fuel economy, as the engine may be running too rich or too lean.

2. Engine misfires: An injector that is not working correctly can cause the engine to misfire, leading to rough idling or poor acceleration.

3. Rough engine performance: A faulty injector can result in a rough-running engine and poor performance.

4. Illuminated check engine light: When the OBD-II system detects a problem with the injector circuit in cylinder 10, it will usually illuminate the check engine light on your dashboard.

What Causes OBD-II Code P02F7?

There are several possible causes of OBD-II code P02F7. They include:

1. Wiring and electrical issues: The injector circuit in cylinder 10 can be affected by faulty wiring or electrical issues, such as corroded connectors or broken wires.

2. Failed injector: The injector itself may have failed, causing it to malfunction and triggering the code.

3. Clogged injector: A clogged injector can restrict fuel flow and cause the code to be triggered.

4. Fuel pressure issues: If the fuel pressure is too high or too low, it can cause injector issues, leading to the code being triggered.

How to Repair OBD-II Code P02F7

Once you have diagnosed the problem as OBD-II code P02F7, you will need to repair it to restore your car’s performance. Here are the steps you should follow:

1. Check the wiring: Start by checking the wiring and connectors to ensure they are properly connected and in good condition. If you find any broken wires or corroded connectors, replace them.

2. Test the injector: Use a multimeter to test the injector’s resistance. If the readings are out of range, the injector may be faulty and needs to be replaced.

3. Clean the injector: If the injector is clogged, try cleaning it using a fuel system cleaner. Ensure the cleaner is suitable for the type of fuel injection system you have.

4. Check the fuel pressure: Ensure that the fuel pressure is within the manufacturer’s recommended range. If it’s not, replace the fuel pressure regulator.

5. Replace the injector: If none of the above repairs work, you may need to replace the injector.

Frequently Asked Questions

Q1. Is it safe to drive my car with OBD-II code P02F7?

A: Generally, it’s not safe to drive with this code as it can cause reduced fuel efficiency, engine misfires, and rough engine performance.

Q2. Can I fix OBD-II code P02F7 myself?

A. It’s possible to fix it yourself if you have the necessary tools and knowledge. However, it’s always best to let a professional mechanic handle the repair to ensure it’s done correctly.

Q3. How much will it cost to fix OBD-II code P02F7?

A. The total cost will depend on the root cause of the issue. If you only need to replace a wire or two, the cost will be relatively low. Still, if you need to replace an injector, the cost will be considerably higher.

Q4. How often should I check my OBD-II system?

A. It is recommended to check your OBD-II system anytime your check engine light is illuminated and during routine maintenance checks.

Q5. What is the best way to prevent OBD-II issues?

A. Maintaining a regular maintenance schedule can help prevent OBD-II issues from occurring. Additionally, avoiding poor driving habits and using quality fuel can also help prevent issues.


OBD-II code P02F7 signifies a problem with the injector circuit in cylinder 10 of your engine. It can cause reduced fuel efficiency, engine misfires, and rough engine performance. The possible causes of the code include wiring and electrical issues, a failed injector, a clogged injector, or fuel pressure issues. It’s always best to have a professional mechanic diagnose and repair the issue to ensure it’s done correctly. Preventative measures such as regular maintenance checks and avoiding poor driving habits can help reduce the likelihood of encountering OBD-II issues in the future.

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