how to fix P0301 code in Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the vehicle battery to prevent electrical shock.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter

2. Inspect and Replace Spark Plug

1. Remove the engine cover if necessary.
2. Disconnect the ignition coil connector from cylinder 1.
3. Remove the ignition coil bolts and carefully pull out the ignition coil.
4. Remove the spark plug using a spark plug socket.
5. Inspect the spark plug; if worn or damaged, replace it with a new one (refer to manufacturer specifications for the correct type).
6. Gap the new spark plug to the manufacturer’s specification.
7. Install the new spark plug and torque it to the specified value (typically 15-20 Nm).
8. Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil (if necessary)

1. If the ignition coil was found to be faulty in the inspection, replace it with a new unit.
2. Follow the same steps as above to remove and install the new ignition coil.
3. Ensure that all connections are secure.

4. Compression Test (if required)

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 compression reading.
4. Compare the reading to manufacturer specifications; if low, further investigation is needed for internal engine issues.