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

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector for cylinder 1.
  3. Remove the ignition coil from cylinder 1 using a socket set.
  4. Unscrew and carefully remove the spark plug from cylinder 1 using a spark plug socket.
  5. Inspect the spark plug for wear or damage; replace it if necessary with OEM or equivalent parts. Gap the new spark plug according to manufacturer specifications.
  6. Reinstall the new spark plug and ignition coil in reverse order of removal.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the ignition coil was found faulty during inspection, replace it with a new one.
  2. Reconnect the ignition coil connector.
  3. Reinstall the engine cover if applicable.

4. Test Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a noid light to check for injector signal; replace the injector if there is no signal.
  3. If the injector is faulty, remove it and replace it with a new one.
  4. Reconnect the fuel injector connector.

5. Check for Vacuum Leaks

• Sub-steps:
  1. Inspect all vacuum hoses leading to the intake manifold for cracks or disconnections.
  2. Use propane or carburetor cleaner to check for leaks around the intake manifold while the engine is running.
  3. Repair any identified leaks by replacing hoses or resealing the intake manifold.