my Honda Civic 11th Generation (2022-Present) has a P0301 code what does it mean

Solution

1. Preparation

• Tools required: OBD-II scanner, socket set, compression tester, multimeter, fuel injector cleaner.
• Safety warning: Disconnect the battery before working on electrical components.

2. Replace Spark Plug and Ignition Coil

1. Remove the engine cover if necessary.
2. Disconnect the ignition coil connector from cylinder 1.
3. Remove the ignition coil mounting bolts using a socket set.
4. Pull the ignition coil out of the spark plug well.
5. Remove the spark plug using a spark plug socket.
6. Install the new spark plug to the manufacturer's specified torque (usually around 13 lb-ft).
7. Reinstall the ignition coil and secure it with bolts.
8. Reconnect the ignition coil connector.

3. Inspect and Clean Fuel Injector

1. Disconnect the fuel injector connector for cylinder 1.
2. Remove the fuel rail bolts and carefully lift the rail to access the injector.
3. Remove the fuel injector from the rail.
4. Clean the injector with fuel injector cleaner or replace it if necessary.
5. Reinstall the fuel injector into the rail and secure it.
6. Reattach the fuel rail to the engine and tighten the bolts to the manufacturer’s specifications.

4. Perform Compression Test

1. Remove the spark plug from cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine for several seconds to take a reading.
4. Compare the compression value to the manufacturer's specifications.
5. If the compression is low, further engine repairs may be necessary.