how to fix P0301 misfire code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket.
• Inspect the old spark plug; replace with a new spark plug if worn or fouled.
• Torque the new spark plug to the manufacturer’s specifications (typically 13 lb-ft).

3. Replace Ignition Coil

• If the ignition coil is faulty, replace it.
• Tools Required: Socket set
• Remove the old ignition coil and install the new one, ensuring it is seated correctly and the electrical connector is firmly attached.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner kit or appropriate fuel additive
• Disconnect the fuel injector connector and remove it from cylinder 1.
• Clean the injector using a fuel injector cleaner kit or replace it if necessary.
• Reinstall the fuel injector and reconnect the electrical connector.

5. Compression Test (if needed)

• Tools Required: Compression tester
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole and crank the engine.
• Compare the reading to manufacturer specifications; if it's low, further investigation into internal engine issues is needed.