P02C8 Fault Code

P02C8 OBD-II Trouble Code Short Description

Cylinder 12 Injector Restricted

What does trouble code P02C8 mean?

The P02C8 fault code on cars indicates a cylinder 12 injector restriction. This means that there is a problem with the fuel injector in cylinder 12 of the engine. This could be caused by a blockage or restriction in the injector, preventing it from delivering the correct amount of fuel to the cylinder.

The solution to this issue typically involves inspecting and cleaning the fuel injector to remove any debris or deposits that may be causing the restriction. In some cases, the injector may need to be replaced if it is damaged or too clogged to be effectively cleaned.

It is important to address this issue promptly, as a restricted injector can cause poor engine performance, reduced fuel efficiency, and potential damage to the engine. If left untreated, it could lead to further problems such as misfires and engine damage.

To diagnose and resolve this issue, it is recommended to take the vehicle to a qualified mechanic or dealership. They will be able to use diagnostic tools to confirm the root cause of the restricted injector and perform the necessary repairs.


What are the symptoms of the P02C8 code?

  • Engine misfires or runs rough
  • Loss of power
  • Poor fuel efficiency
  • Check Engine Light (CEL) illuminated
  • Smoky exhaust or excessive smoke from the tailpipe
  • Engine hesitation or stumbling when accelerating
  • Difficulty starting the engine


What causes the P02C8 code?

The P02C8 fault code on cars is typically caused by a restricted injector in cylinder 12. This can be due to several reasons, including:

  1. Fuel contamination: If the fuel contains impurities or debris, it can clog the injector nozzle, restricting its flow.

  2. Injector clogging: Over time, the injector can become clogged with deposits from fuel additives or low-quality fuel.

  3. Wiring or connector issues: Faulty wiring or connectors can prevent proper communication between the engine control unit (ECU) and the injector, leading to restricted fuel flow.

  4. Fuel pressure problems: Inadequate fuel pressure can affect the injector's performance and cause restriction.

  5. Mechanical damage: Any physical damage to the injector, such as a broken or stuck nozzle, can result in restricted fuel flow.

To diagnose and fix the P02C8 fault code, it is recommended to:

  1. Check the fuel quality and ensure there are no contaminants present.

  2. Perform a fuel injector cleaning or replace the injector if necessary.

  3. Inspect the wiring and connectors for any damage or loose connections. Repair or replace as needed.

  4. Test the fuel pressure to ensure it meets the manufacturer's specifications.

  5. Inspect the injector for any physical damage and replace if necessary.

Note: It is always recommended to consult a professional mechanic or use a diagnostic tool for an accurate diagnosis and repair of fault codes.

Possible Solutions

How to fix P02C8?

To fix the P02C8 fault code on cars, follow these steps:

  1. Check Cylinder 12 Injector: Start by inspecting the injector on cylinder 12. Look for any signs of damage, blockage, or leakage. Clean or replace the injector if necessary.

  2. Test Injector Wiring: Inspect the wiring going to the injector. Check for any loose connections, frayed wires, or corrosion. Repair or replace any damaged wiring.

  3. Verify Injector Pulse: Use a diagnostic tool to check if the injector is receiving a proper pulse signal. If there is no pulse, it may indicate a problem with the engine control module (ECM) or the wiring harness. Further investigation is required.

  4. Check Fuel Pressure: Ensure that the fuel pressure is within the manufacturer's specifications. Low fuel pressure can cause injector issues. If the pressure is too low, inspect and clean the fuel system components or replace the fuel pump if necessary.

  5. Perform ECM Update: Check if there is an available ECM software update for your vehicle. Sometimes, a software glitch can cause injector-related faults. Updating the ECM may resolve the issue.

  6. Clear Fault Codes: After performing the necessary repairs or checks, clear the fault codes using a diagnostic scanner. This will reset the system and allow you to see if the P02C8 code reoccurs.

If the P02C8 fault code persists after following these steps, it is recommended to seek assistance from a professional mechanic or authorized dealership for a more in-depth diagnosis and repair.