how to fix P0301 code in Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Replace Spark Plug

1. Remove the engine cover if applicable using a socket set.
2. Remove the ignition coil connected to cylinder 1 by unscrewing the retaining bolts.
3. Disconnect the ignition coil connector.
4. Use a spark plug socket to remove the spark plug from cylinder 1.
5. Inspect the old spark plug for signs of wear, damage, or fouling.
6. Install a new spark plug with the correct gap (typically 0.043 inches for Honda engines).
7. Torque the spark plug to the manufacturer’s specification (usually around 13 lb-ft).

3. Replace Ignition Coil

1. Install the new ignition coil for cylinder 1 by reversing the removal steps.
2. Ensure the connector is firmly attached and the bolts are tightened to specification (usually around 7 lb-ft).

4. Inspect and Clean Fuel Injector

1. Access the fuel injector for cylinder 1 by removing any necessary components (e.g., intake manifold).
2. Disconnect the fuel injector connector and fuel line carefully.
3. Remove the fuel injector and inspect it for clogs or damage.
4. Clean the injector using a fuel injector cleaner or replace it if necessary.
5. Reinstall the injector, ensuring proper seating and connection.

5. Clear Engine Codes

1. Reconnect the battery.
2. Use the OBD-II scanner to clear the P0301 code from the engine control module.
3. Start the engine and allow it to run for a few minutes to ensure no codes reappear.