how to deal with P0301 misfire code on my Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Remove the engine cover if necessary.
• Locate the spark plug for cylinder 1 (typically at the front of the engine).
• Using a socket wrench, remove the spark plug.
• Inspect the spark plug for wear, carbon buildup, or damage; replace if necessary.
• Torque the new spark plug to the manufacturer's specifications (usually around 13 lb-ft).
• Reconnect the ignition coil to the spark plug.

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the ignition coil using a socket wrench.
• Inspect for any visible damage or corrosion.
• Replace with a new ignition coil if necessary.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Locate the fuel injector for cylinder 1.
• Disconnect the electrical connector and fuel line carefully (be wary of pressurized fuel).
• Remove the fuel injector using the appropriate tool.
• Inspect for clogs or damage; clean or replace as necessary.
• Reinstall the fuel injector, reconnect the fuel line, and electrical connector.

5. Compression Test

• Remove the spark plug for cylinder 1 again.
• Insert a compression gauge into the spark plug hole.
• Crank the engine a few times and read the compression value.
• Compare the value to manufacturer specifications (usually around 180-200 psi).
• If compression is low, further diagnose potential mechanical issues such as a blown head gasket or valve problems.