how to fix code P0301 on my Honda Pilot YF4 (2023-Present)

Solution

1. Preparation

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

2. Remove Ignition Coil and Spark Plug

• Tools Required: Socket set, torque wrench, ratchet, spark plug socket.
• Remove the engine cover if necessary by unbolting it.
• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the bolts securing the ignition coil and carefully pull it out.
• Use a spark plug socket to remove the spark plug from cylinder 1. Inspect it for wear or damage.

3. Replace Spark Plug and Ignition Coil

• If the spark plug is worn, replace it with a new spark plug that meets OEM specifications.
• Install the new ignition coil onto cylinder 1, ensuring it fits securely.
• Torque the ignition coil bolts to manufacturer's specification (typically around 10-15 ft-lbs).
• Reconnect the electrical connector to the ignition coil.

4. Test Fuel Injector

• Tools Required: Noid light or multimeter.
• Disconnect the fuel injector connector for cylinder 1.
• Use a noid light to check for proper signal to the fuel injector while cranking the engine.
• If the signal is not present, further diagnose the wiring and ECU signal.

5. Reassemble and Final Checks

• Reinstall the engine cover if it was removed.
• Reconnect the battery.
• Start the engine and allow it to idle for a few minutes, checking for any unusual noises or conditions.