how to fix P0301 code on Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool down completely before beginning work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if equipped.
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Unscrew and remove the spark plug using the spark plug socket.
• Inspect the spark plug for wear or fouling. Replace it if necessary.
• Install the new spark plug and torque it to the manufacturer's specification (typically around 13 ft-lbs).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil

• If the spark plug inspection shows no issues, test the ignition coil for resistance using a multimeter.
• If the coil is faulty, remove it and install a new ignition coil, ensuring it is compatible with the Honda CR-V.
• Reconnect all electrical connectors and ensure secure mounting.

4. Inspect and Replace Fuel Injector

• If misfire persists, check the fuel injector for cylinder 1.
• Disconnect the fuel injector electrical connector and remove the fuel rail if necessary.
• Inspect the injector for clogs or damage. Replace if needed.
• Reinstall the fuel rail and reconnect the injector and electrical connector, ensuring a proper seal.

5. Compression Test

• If misfire continues after replacing the spark plug and ignition coil, perform a compression test.
• Remove spark plugs and use a compression gauge to measure cylinder 1's compression.
• Compare readings with manufacturer specifications. If readings are low, further diagnostics for internal engine issues may be required.