how to fix my Honda Accord 10th Generation (2018-2022) check engine light that keeps coming on

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical short circuits.
• Allow the engine to cool before working on any components.

2. Replace Faulty Components

• Gas Cap Replacement:

  1. Remove the old gas cap by turning it counterclockwise.
  2. Install the new gas cap by turning it clockwise until it clicks.

• Spark Plug Replacement:

  1. Remove the ignition coil by unscrewing the retaining bolts.
  2. Pull the ignition coil out and remove the old spark plug with a spark plug socket.
  3. Install the new spark plug, hand-tighten, then torque to 13 lb-ft.
  4. Reinstall the ignition coil and secure it with the retaining bolts.

• Oxygen Sensor Replacement (if faulty):

  1. Locate the oxygen sensor (upstream or downstream, as indicated by the trouble code).
  2. Disconnect the electrical connector and use an oxygen sensor socket to remove the sensor.
  3. Install the new oxygen sensor and reconnect the electrical connector.

3. Clear Error Codes

1. Reconnect the negative battery terminal.
2. Use the OBD-II scanner to clear any stored error codes.
3. Start the engine and allow it to reach operational temperature.