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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery (negative terminal) to ensure safety while working on electrical components.

2. Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Locate cylinder 1 spark plug (usually at the front of the engine on the passenger side).
• Use a spark plug socket to remove the old spark plug.
• Inspect the old spark plug for signs of fouling or damage.
• Apply anti-seize lubricant to the threads of the new spark plug.
• Install the new spark plug to the manufacturer-specified torque (typically around 13 lb-ft).
• Reattach any components removed, including the engine cover.

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the ignition coil mounting bolts using a socket set.
• Carefully pull out the ignition coil from the spark plug well.
• Install the new ignition coil, securing it with bolts and reconnecting the electrical connector.

4. Inspect/Replace Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel rail bolts and carefully lift the fuel rail with the injector attached.
• Remove the old fuel injector from the rail; inspect the O-ring for damage.
• Install the new fuel injector, ensuring a proper seal with a new O-ring.
• Reattach the fuel rail, securing it with the mounting bolts.

5. Compression Test (if necessary)

• Remove the spark plug from cylinder 1.
• Insert a compression gauge into the spark plug hole.
• Crank the engine and take the reading, ensuring it meets manufacturer specifications (usually around 180-210 psi).
• If compression is low, investigate further for internal engine issues.