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

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, and gap gauge.
• Remove the ignition coil by unscrewing the bolts securing it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace with a new spark plug if necessary, ensuring the gap is set to the manufacturer’s specifications (typically 0.043 inches for Honda).
• Reinstall the spark plug and torque to the manufacturer's specified value (approximately 13 lb-ft).

3. Check and Replace Ignition Coil

• Tools Required: Socket set, multimeter.
• Inspect the ignition coil for cracks or damage.
• Test the ignition coil with a multimeter to check for proper resistance. Replace if it is out of specification.
• Install the new ignition coil by securing it in place and reconnecting the electrical connector.

4. Test Fuel Injector

• Tools Required: Noid light or multimeter.
• Disconnect the fuel injector connector from cylinder 1.
• Use a noid light to check for signal when the engine is cranked. If no signal, there may be an issue with the engine control unit (ECU) or wiring.
• If the injector is suspected to be clogged or malfunctioning, remove it and clean or replace as necessary.

5. Verify Engine Compression

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder 1 and install the compression gauge.
• Crank the engine a few times and record the compression reading. Compare it with the manufacturer's specifications (typically between 180-200 psi).
• If compression is low, further investigation of internal engine components may be required.