how to resolve P0301 code in my Honda Pilot YF3 (2016-2022)?

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, socket set, torque wrench, multimeter, fuel injector tester, compression gauge, and replacement parts as needed.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unplug the electrical connector.
  • Remove the mounting bolts using a socket wrench.
• Extract the spark plug:
  • Use a spark plug socket to carefully unscrew the spark plug.
• Inspect the spark plug for wear or damage. If necessary, replace it with a new one.
• Torque the new spark plug to the manufacturer's specifications (typically around 13-15 lb-ft).

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil:
  • Use a multimeter to measure the resistance of the ignition coil.
• If the coil is faulty, replace it:
  • Install the new ignition coil and secure it with the mounting bolts.
  • Reconnect the electrical connector.

4. Inspect and Test Fuel Injector

• Check the fuel injector operation:
  • Use a fuel injector tester to ensure it is functioning correctly.
• If the injector is faulty, replace it:
  • Disconnect the fuel line and electrical connector.
  • Remove the fuel injector from the fuel rail.
  • Install the new injector and ensure it is seated properly.

5. Reassemble and Reconnect

• Reinstall any components removed during inspection and repair.
• Reconnect the battery.