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.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate the spark plug for cylinder 1 (usually at the front of the engine).
3. Use a spark plug socket and ratchet to remove the old spark plug.
4. Inspect the spark plug for signs of wear; replace if necessary.
5. Gap the new spark plug according to manufacturer specifications.
6. Install the new spark plug and tighten it to the specified torque (typically around 20 Nm or 15 lb-ft).

3. Inspect and Replace Ignition Coil

1. Disconnect the ignition coil connector.
2. Remove the ignition coil by pulling it straight up.
3. Inspect for any cracks or damage; replace if necessary.
4. Install a new ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

1. Remove the fuel injector connector.
2. Use a fuel injector cleaning kit if available or replace the injector if faulty.
3. Reinstall the injector, ensuring it fits securely into the rail, and reconnect the connector.

5. Compression Test (if misfire persists)

1. Remove the spark plug from cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine for a few seconds and record the reading.
4. Compare results with manufacturer specifications; if low, further investigation of engine internals is required.