how to fix P0301 code in 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. Inspect and Replace Spark Plugs

• Tools Required: Socket set, torque wrench
• Remove the engine cover (if applicable).
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil using a socket wrench.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or damage; replace with a new plug if necessary.
• Install the new spark plug, hand-tighten, and then torque to 13 lb-ft (18 Nm).
• Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

• Tools Required: Socket set, multimeter
• If the spark plug is not the issue, test the ignition coil's resistance using a multimeter; refer to the service manual for specific resistance values.
• If faulty, remove the ignition coil from cylinder 1 and replace it with a new coil.
• Reinstall the ignition coil and reconnect the connector.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, hand tools
• Remove the fuel injector connector.
• Use a fuel injector cleaner to clean the injector while it is still in place or replace with a new one if cleaning is ineffective.
• Reconnect the fuel injector connector.

5. Compression Test

• Tools Required: Compression gauge
• Remove the spark plug from cylinder 1.
• Insert the compression gauge into the spark plug hole.
• Crank the engine and record the compression reading; it should be within manufacturer specifications.
• If compression is low, further engine disassembly may be necessary.

6. Reassemble and Test

• Reinstall any components removed during the process.
• Reconnect the negative battery terminal.
• Start the engine and monitor for the check engine light.