The P02C4: Cylinder 11 – Injector Restricted indicates that the fuel injector for cylinder 11 is restricted. This can happen due to a clogged or faulty injector, contaminated fuel, or low fuel pressure. When this code appears, it means that the engine may not be receiving the correct amount of fuel in cylinder 11, leading to performance issues.
P02C4 – Quick Overview
| Meaning | P02C4: Cylinder 11 – Injector Restricted |
| Is it serious? | Yes, this code is serious because it can cause improper fuel delivery to cylinder 11, resulting in reduced engine performance, misfires, and potential engine damage. |
| Possible causes | – Clogged or faulty fuel injector – Contaminated fuel – Low fuel pressure |
| How to diagnose? | – Clean or replace the fuel injector for cylinder 11 – Check for fuel contamination – Verify fuel pressure is within specifications |
P02C4 Meaning
The P02C4: Cylinder 11 – Injector Restricted code means that the injector for cylinder 11 is unable to properly deliver fuel to the engine, likely due to clogging, low pressure, or contamination in the fuel system. This condition can cause engine misfires, loss of power, and reduced fuel efficiency.
Step-by-step diagnostic guide
Follow the outlined procedure to diagnose and resolve the P02C4 code by addressing potential causes one by one.
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any other related codes. These may give more insight into the issue. | OBD-II Scanner |
| Inspect the Fuel Injector for Cylinder 11 | Visually inspect the fuel injector for cylinder 11 for signs of clogging or damage. Make sure it is securely attached and functioning properly. | Flashlight, Safety Gloves |
| Clean or Replace the Fuel Injector for Cylinder 11 | Clean the fuel injector using appropriate cleaner, or replace it if cleaning does not resolve the issue. | Fuel Injector Cleaner, Replacement Injector |
| Check for Fuel Contamination | Inspect the fuel for contamination such as dirt or water, which could be clogging the injector. Replace fuel if necessary. | Fuel Test Kit |
| Verify Fuel Pressure is Within Specifications | Use a fuel pressure gauge to check if the fuel pressure is within the manufacturer’s recommended range. Adjust or replace components if necessary. | Fuel Pressure Gauge, Manufacturer’s Specifications |
| Clear the Code and Test Drive | After completing the necessary repairs, clear the P02C4 code using the OBD-II scanner. Take the vehicle for a test drive to confirm the problem is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P02C4 code has not returned. If the code reappears, further diagnosis may be required. | OBD-II Scanner |
This step-by-step guide will help you accurately diagnose and fix the P02C4 code, ensuring proper fuel injector function and engine performance.
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko