how to fix P0301 misfire code in Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unbolting and gently pulling it off.
• Remove the spark plug using a spark plug socket. Inspect the spark plug for wear, carbon build-up, or damage.
• If necessary, replace the spark plug with a new one (ensure it's the correct type and gap specified in the owner's manual).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Test and Replace Ignition Coil (if needed)

• Using a multimeter, check the resistance of the ignition coil. Compare the readings with specifications provided in the service manual.
• If the coil is faulty, remove it and replace it with a new one.
• Reinstall the coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Remove the fuel injector from cylinder 1.
• Inspect for clogs or carbon deposits. Clean using an appropriate injector cleaner or replace if necessary.
• Reinstall the fuel injector ensuring proper seating and connection.

5. Conduct Compression Test

• Insert the compression tester into the spark plug hole of cylinder 1.
• Crank the engine and record the compression reading. Compare to the specifications in the service manual.
• If the compression is significantly low, further investigation into engine internals may be required.