how to fix P0301 code on Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during the repair.
• Raise the vehicle and secure it with jack stands if necessary.

2. Inspect and Replace Spark Plug

• Remove the ignition coil connected to cylinder 1:
  1. Disconnect the electrical connector from the ignition coil.
  2. Unscrew the bolts holding the ignition coil in place and remove it.
• Remove the spark plug:
  1. Use a spark plug socket and ratchet to unscrew the spark plug.
  2. Inspect the spark plug for signs of wear, fouling, or damage. Replace if necessary.
• Install a new spark plug:
  1. Apply anti-seize compound to the threads of the new spark plug.
  2. Torque to the manufacturer’s specification (typically around 13 lb-ft for Honda).

3. Check and Replace Ignition Coil (if necessary)

• Test the ignition coil:
  1. Use a multimeter to check the primary and secondary resistance of the ignition coil.
  2. Replace the ignition coil if it falls outside the manufacturer’s specifications.
• Install the new ignition coil:
  1. Position the coil over the new spark plug and secure it with the bolts.
  2. Reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 1:
  1. Disconnect the fuel injector electrical connector.
  2. Remove any retaining clips and unscrew the injector from the fuel rail.
• Clean the fuel injector with an appropriate cleaner or replace it if faulty.
• Reinstall the fuel injector:
  1. Insert the injector back into the fuel rail and secure it with clips.
  2. Reconnect the electrical connector.

5. Final Checks

• Reconnect the battery.
• Clear the error codes using the OBD-II scanner.