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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate the spark plug for Cylinder 1 (usually near the front of the engine).
3. Use a spark plug socket and ratchet to remove the old spark plug.
4. Inspect the spark plug for wear or damage; replace if necessary.
5. Apply anti-seize compound on the threads of the new spark plug.
6. Install the new spark plug to the manufacturer’s torque specification (typically 13 lb-ft).

3. Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil for Cylinder 1.
2. Remove the bolts securing the ignition coil and lift it out.
3. Install the new ignition coil in place and secure it with bolts.
4. Reconnect the electrical connector.

4. Check Fuel Injector

1. Disconnect the fuel injector connector for Cylinder 1.
2. Use a noid light to check for signal to the injector; if no signal, investigate wiring or ECM issues.
3. If injector is faulty, remove it by unscrewing any retaining clips and disconnecting the fuel line.
4. Install the new fuel injector and reattach the connector.

5. Perform Compression Test (If Necessary)

1. Remove the spark plug from Cylinder 1.
2. Insert the compression gauge into the spark plug hole.
3. Crank the engine for about 5 seconds and record the reading.
4. Compare with the manufacturer's specifications (usually between 180-220 psi).
5. If compression is low, further diagnosis may be required for piston rings or valves.