how to fix the P0301 code in my Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the mounting bolt.
  2. Extract the spark plug using a spark plug socket and ratchet.
  3. Inspect the spark plug for signs of wear or fouling; replace if necessary with OEM specifications.
  4. Install the new spark plug, tightening it to the manufacturer's specified torque (usually around 13-15 lb-ft).

3. Check and Replace Ignition Coil (if needed)

• Sub-steps:
  1. If the ignition coil shows signs of damage or has a high resistance reading, replace it.
  2. Install the new ignition coil onto the spark plug and secure it with the mounting bolt.
  3. Reconnect the electrical connector to the ignition coil.

4. Inspect Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector and remove the injector from the fuel rail.
  2. Use a multimeter to test the injector’s resistance; refer to the service manual for specifications.
  3. If the injector is faulty, replace it with a new one, ensuring proper seating and connection.

5. Reassemble and Reconnect Battery

• Sub-steps:
  1. Reconnect the battery terminals, ensuring a secure connection.
  2. Clear the P0301 code using an OBD-II scanner.