how to fix the P0301 misfire code in my Volkswagen Golf MK7 (2015-2019)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil harness and unscrew the ignition coil from cylinder 1.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install the new spark plug and torque it to manufacturer specifications (typically around 22 ft-lbs).

3. Replace Ignition Coil

• Remove the ignition coil from cylinder 1.
• Inspect the coil connector and wiring for damage.
• Install the new ignition coil, ensuring it is seated correctly.
• Reconnect the ignition coil harness.

4. Test Fuel Injector

• Use a fuel injector tester to check for proper operation of the cylinder 1 injector.
• If faulty, replace the fuel injector.
• Reconnect all electrical connectors and hoses.

5. Reassemble and Connect Battery

• Reconnect the negative battery terminal.
• Start the engine and check for any abnormal sounds or issues.