why does my Honda Accord 10th Generation (2018-2022) check engine light keep coming on

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical issues.
• Allow the engine to cool before starting work.

2. Address Fault Codes

• 1.1 Refer to the OBD-II scanner for specific fault codes.
• 1.2 Research the codes to determine the likely causes (e.g., P0300 for random misfire).
• 1.3 Clear the codes and take the vehicle for a test drive to see if they reappear.

3. Inspect and Replace Spark Plugs/Coils

• 2.1 Remove the engine cover if applicable.
• 2.2 Locate and remove the spark plug leads and ignition coils using a socket set.
• 2.3 Inspect spark plugs for wear; replace if necessary (NGK or Denso plugs recommended).
• 2.4 Replace any faulty ignition coils with OEM parts.

4. Check Air Intake System

• 3.1 Inspect the air filter for dirt or clogging; replace if necessary.
• 3.2 Examine the air intake hoses for cracks or disconnections.
• 3.3 Clean the throttle body using throttle body cleaner.

5. Examine Fuel System

• 4.1 Use a fuel pressure gauge to check for proper fuel pressure (specify manufacturer’s pressure specs).
• 4.2 Replace the fuel filter if it's clogged.
• 4.3 Inspect fuel injectors for proper operation; clean or replace if necessary.

6. Exhaust System Inspection

• 5.1 Look for any visible signs of damage or rust in the exhaust system.
• 5.2 Check for blockages in the catalytic converter or muffler; replace if necessary.