how to fix P0301 code in Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel injector cleaning kit.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Remove the engine cover if necessary.
• Locate the spark plug for cylinder 1 (check service manual for location).
• Use a socket and ratchet to remove the spark plug.
• Inspect the old spark plug for wear; replace if necessary.
• Install the new spark plug by hand to avoid cross-threading, then torque to manufacturer specifications (typically around 13 lb-ft).
• Reconnect any components or covers removed.

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the retaining bolts using a socket and ratchet.
• Carefully pull out the ignition coil.
• Install the new ignition coil and torque bolts to manufacturer specifications.
• Reconnect the electrical connector.

4. Clean or Replace Fuel Injector

• If the fuel injector is clogged, use a fuel injector cleaning kit to clean it.
• If replacement is needed, disconnect the fuel line and electrical connector from the injector.
• Remove the old injector and replace it with a new one, ensuring a proper seal.
• Reconnect the fuel line and electrical connections.

5. Conduct Compression Test (if necessary)

• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine a few times and record the compression reading.
• Compare the reading to manufacturer specifications; replace any damaged components as needed.