how to fix Honda Pilot YF3 (2016-2022) P0301 cylinder 1 misfire

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery before starting repairs.
• Ensure the engine is cool to prevent burns.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket and ratchet to remove the spark plug from cylinder 1.
• Inspect the old spark plug for fouling or wear.
• Install a new spark plug (OEM recommended type, typically NGK or Denso).
• Torque the spark plug to manufacturer specifications (usually around 13 ft-lbs).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil using a socket and ratchet.
• Inspect the coil for damage or signs of arcing.
• Install a new ignition coil, ensuring proper seating.
• Reconnect the electrical connector.

4. Check Fuel Injector

• Disconnect the injector connector for cylinder 1.
• Inspect the connector and wiring for damage.
• Test the injector with a noid light to ensure it is receiving a signal.
• If faulty, replace the fuel injector with an OEM equivalent.
• Reconnect the injector connector.

5. Final Assembly

• Reinstall any components removed for access (e.g., engine cover).
• Reconnect the battery.