why does my Honda Civic check engine light keep coming on after reset

Solution

1. Preparation

• Gather necessary tools and parts before starting the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical issues.

2. Address Fault Codes

• Sub-step 1: After scanning, note all fault codes.
• Sub-step 2: Research each code to determine the likely cause.
• Sub-step 3: Clear the codes and monitor if they return after repairs.

3. Inspect and Replace Components

• Sub-step 1: For vacuum leaks, inspect hoses and connections; replace any that are cracked or disconnected.
• Sub-step 2: Check the gas cap for proper sealing; if damaged, replace with a new gas cap.
• Sub-step 3: For faulty ignition components, remove spark plugs and inspect; replace any that are worn. Test ignition coils with a multimeter, replacing as necessary.
• Sub-step 4: For fuel system issues, check the fuel pressure using a fuel pressure gauge; replace the fuel pump if pressure is low.
• Sub-step 5: Inspect the catalytic converter; if blocked, replace it.

4. Reassemble and Reconnect

• Reinstall any components removed during inspection and repairs.
• Reconnect the battery and ensure all connections are secure.