my Honda Accord 10th Generation (2018-2022) has a P0301 code, what does it mean?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector from cylinder 1.
• Remove the ignition coil and then remove the spark plug.
• Inspect the spark plug for signs of wear, deposits, or damage. Replace if necessary.
• Install a new spark plug, torquing it to the manufacturer’s specifications (typically around 13-16 lb-ft for most Honda vehicles).
• Reinstall the ignition coil and reconnect the connector.

3. Test Ignition Coil

• Tools Required: Multimeter
• With the ignition coil removed, test the primary and secondary resistance according to manufacturer specifications.
• Replace the ignition coil if it does not meet specifications.

4. Compression Test

• Tools Required: Compression gauge
• Remove the spark plug from cylinder 1.
• Insert the compression gauge into the spark plug hole and crank the engine to take a reading.
• Compare the compression reading to manufacturer specifications (typically around 180 psi).
• If compression is low, further investigation into the engine internals may be required.

5. Inspect Fuel Injector

• Tools Required: Fuel injector cleaning kit
• Disconnect the fuel injector connector.
• Remove the fuel injector from cylinder 1.
• Inspect for clogs or damage, and clean or replace as necessary.
• Reinstall the fuel injector and reconnect the connector.