how to fix P0301 misfire code in Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting work.

2. Remove Ignition Coil and Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if necessary.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil bolts and lift the coil out.
• Use a spark plug socket to carefully remove the spark plug from cylinder 1.

3. Inspect and Replace Components

• Tools Required: Visual inspection tools (flashlight, mirror).
• Inspect the spark plug for wear (look for fouling or excessive gap).
  • If damaged, replace with a new spark plug of the specified type.
• Inspect the ignition coil for cracks or carbon tracking.
  • If faulty, replace with an OEM or high-quality aftermarket ignition coil.

4. Check and Clean Fuel Injector

• Tools Required: Noid light or multimeter.
• Connect the noid light to the fuel injector connector to check for proper signal.
  • If no signal is present, trace wiring back to the ECM for continuity issues; repair as necessary.
• If the injector is clogged, consider cleaning or replacing it.

5. Reassemble and Torque

• Reinsert the new spark plug, ensuring it is torqued to the manufacturer’s specifications (typically 22 lb-ft).
• Reinstall the ignition coil, securing it with bolts and reconnecting the electrical connector.
• Replace the engine cover if removed.