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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Fuel injector tester
• Screwdrivers

2. Inspect Ignition Components

• Sub-steps:
  1. Remove the engine cover for access.
  2. Disconnect the ignition coil connector and remove the ignition coil from cylinder 1.
  3. Remove the spark plug from cylinder 1 using a spark plug socket.
  4. Inspect the spark plug for fouling, wear, or damage; replace if necessary.
  5. Check the ignition coil for cracks or electrical faults; replace if necessary.

3. Test Fuel Injector

• Sub-steps:
  1. Reconnect the ignition coil and move to the fuel injector connector.
  2. Attach the fuel injector tester to the injector for cylinder 1.
  3. Start the engine and observe the injector operation; replace if it is not functioning correctly.

4. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Install the compression tester into the spark plug hole.
  3. Crank the engine several times to obtain a reading.
  4. Compare the reading to manufacturer specifications; if low, further investigation is needed for engine internals.

5. Reassemble and Final Checks

• Sub-steps:
  1. Reinstall the spark plug and ignition coil.
  2. Reconnect all electrical connectors and engine cover.
  3. Reconnect the negative battery terminal.