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

Solution

1. Preparation

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

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket set to remove the ignition coil from cylinder 1.
• Remove the old spark plug using a spark plug socket.
• Inspect the spark plug for signs of wear or damage (carbon buildup, cracks).
• Install a new spark plug, ensuring it is gapped correctly (check manufacturer specifications).
• Reattach the ignition coil and secure it with the appropriate torque (refer to service manual for torque specifications).

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged or if the misfire persists, replace it.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil and install a new one.
• Reconnect the electrical connector securely.

4. Check and Clean Fuel Injector

• If the fuel injector is suspected to be faulty, remove it from cylinder 1.
• Inspect the injector for clogs or leaks.
• Clean the injector with a specialized fuel injector cleaner or replace it if necessary.
• Reinstall the injector, ensuring it is seated properly.

5. Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• Remove the spark plug and insert the compression gauge into the cylinder.
• Crank the engine and note the reading; compare it to manufacturer specifications.
• If compression is low, further investigation is needed for possible internal engine issues.