why does my Honda Pilot YF4 (2023-Present) engine light flash while driving?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Replace Faulty Spark Plugs

• Tools Required: Socket set, torque wrench, spark plug socket.
• Sub-steps:
  1. Remove the engine cover if necessary.
  2. Disconnect the ignition coil connectors.
  3. Remove the ignition coils using the socket set.
  4. Unscrew and remove the old spark plugs using the spark plug socket.
  5. Inspect the old spark plugs for wear; replace with new ones (specify gap per manufacturer).
  6. Reinstall the ignition coils and reconnect the connectors.
  7. Replace the engine cover.

3. Replace Ignition Coils (if necessary)

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Follow steps to remove ignition coils as described above.
  2. Install new ignition coils by reversing the removal steps.
  3. Ensure they are properly seated and connected.

4. Clear Error Codes

• Tools Required: OBD-II scanner.
• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear any stored error codes.
  3. Start the engine to confirm the check engine light is off.