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

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, socket set, torque wrench, compression tester, spark plug socket, new spark plug, new ignition coil (if necessary), and fuel injector cleaner.
• Ensure the vehicle is on a flat surface, and the engine is cool before starting work.

2. Replace Spark Plug

1. Remove Engine Cover (if applicable):
   • Use a socket set to remove bolts securing the engine cover.
2. Disconnect Ignition Coil:
   • Unplug the electrical connector from the ignition coil on cylinder 1.
3. Remove Ignition Coil:
   • Unscrew the ignition coil using the socket set and carefully pull it out.
4. Remove Old Spark Plug:
   • Use the spark plug socket to remove the old spark plug from cylinder 1.
5. Install New Spark Plug:
   • Apply anti-seize lubricant to the threads of the new spark plug (optional).
   • Install the new spark plug and torque it to the manufacturer’s specification (typically 13 lb-ft).
6. Reinstall Ignition Coil:
   • Reinsert the ignition coil and secure it with screws. Reconnect the electrical connector.

3. Check Ignition Coil (if necessary)

1. Test Ignition Coil:
   • If swapping the ignition coil with another cylinder resolves the misfire, replace the faulty ignition coil.
   • Follow the same procedure as above to remove and replace the ignition coil.

4. Fuel Injector Cleaning (if necessary)

1. Add Fuel Injector Cleaner:
   • Add a high-quality fuel injector cleaner to the fuel tank as per the product instructions.
2. Run Engine:
   • Start the engine and allow it to run to help clean the injectors.