how to fix P0301 misfire code in Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool
• Remove the ignition coil from cylinder 1 by unbolting and disconnecting the electrical connector.
• Extract the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Set the gap on the new spark plug to the manufacturer's specified distance (typically around 0.043 inches).
• Install the new spark plug to the specified torque (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

• Reconnect the spark plug wire or ignition coil if it was removed.
• Check the ignition coil for damage or corrosion.
• If faulty, remove the old ignition coil and install the new one, ensuring it is seated properly.
• Reconnect the electrical connector to the ignition coil.

4. Check and Replace Fuel Injector (if necessary)

• Tools Required: Noid light, fuel injector removal tool
• Disconnect the fuel injector connector from cylinder 1.
• Use a noid light to check for proper electrical signal to the injector.
• If the injector is not firing, replace the injector by removing the securing clips and pulling the injector out.
• Install the new injector, ensuring it is seated and secured properly.

5. Final Assembly

• Reconnect all components, ensuring no loose wires or connections.
• Reconnect the negative battery terminal.
• Clear the P0301 code using the OBD-II scanner.