why does my Honda Civic 11th Generation (2022-Present) check engine light keep coming on

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery's negative terminal to prevent electrical issues.

2. Addressing Error Codes

• Use the OBD-II scanner to retrieve and document error codes.
• Research codes to determine the affected system (e.g., P0420 for catalytic converter efficiency).

3. Inspecting and Replacing Components

• Gas Cap:

  • Remove the gas cap, inspect for cracks or damage, and replace if necessary.

• Air Filter:

  • Locate the air filter housing, open it, and replace the air filter if dirty or clogged.

• Spark Plugs and Ignition Coils:

  • Remove the ignition coil cover, disconnect the wiring, and remove coils and spark plugs. Replace with OEM parts, ensuring proper torque (typically 13-15 ft-lbs for spark plugs).

• Fuel System:

  • Check fuel pressure using a fuel pressure gauge; replace the fuel filter if needed and inspect injectors for clogs or failures.

4. Final Assembly

• Reassemble any components removed, ensuring all connections are secure and properly torqued.
• Reconnect the battery's negative terminal.