how to fix P0301 misfire code on my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil using a socket set.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace with a new spark plug if necessary (OEM specifications recommended).
• Reinstall the spark plug and ignition coil, ensuring proper torque (typically 15-20 Nm for spark plugs).

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil using a multimeter (specify resistance values based on manufacturer specifications).
• If the ignition coil fails the test, replace it with a new OEM ignition coil.
• Reconnect the ignition coil connector.

4. Inspect and Clean Fuel Injector

• If the ignition coil is functioning correctly, remove the fuel injector for cylinder 1.
• Clean the injector using an appropriate fuel injector cleaner or replace with a new injector if it appears clogged or damaged.
• Reinstall the injector, ensuring it is seated correctly.

5. Reassemble and Test

• Reinstall the engine cover (if removed).
• Reconnect the negative battery terminal.
• Start the engine and allow it to reach normal operating temperature.