how to troubleshoot P0301 code in my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery's negative terminal to ensure safety.
• Raise the vehicle and secure it on jack stands if working underneath.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, dielectric grease
• Remove the ignition coil from cylinder 1.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or damage; replace it if necessary, using a new plug that meets OEM specifications.
• Apply dielectric grease to the coil boot before reinstalling.

3. Check and Replace Ignition Coil

• If the spark plug is fine, check the ignition coil for faults.
• Tools Required: Multimeter
• Test the resistance of the ignition coil with a multimeter; compare results with manufacturer specifications.
• If the coil is faulty, replace it with a new OEM part.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector for cylinder 1.
• Tools Required: Fuel injector puller (if necessary), cleaning solvent
• Inspect the injector for clogs or leaks; clean it using an appropriate injector cleaning solvent or replace it if damaged.

5. Reassemble and Test

• Reinstall the spark plug, ignition coil, and fuel injector.
• Reconnect the battery's negative terminal.
• Start the engine and allow it to reach operating temperature.