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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the ignition coil cover if necessary.
• Remove the spark plug using a socket wrench.
• Inspect the spark plug for wear and carbon buildup.
• Replace with a new spark plug, ensuring it is gapped correctly (typically 0.044 inches for Honda Civic).
• Torque the spark plug to the manufacturer's specification (typically about 13 ft-lbs).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil bolts and pull the coil out.
• Inspect for damage or corrosion.
• Replace with a new ignition coil specific to cylinder 1.
• Reinstall and reconnect the ignition coil properly.

4. Check Fuel Injector

• Tools Required: Fuel injector cleaner or replacement injector
• Disconnect the fuel injector connector.
• Remove the fuel injector using a fuel injector puller tool if necessary.
• Inspect for clogs or damage.
• Clean the injector using a cleaning kit or replace with a new injector as needed.
• Reinstall the fuel injector and reconnect the electrical connector.

5. Reassembly and Testing

• Reconnect the negative battery terminal.
• Start the engine and monitor for any warning lights.
• Allow the engine to reach operating temperature and check for smooth operation.