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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool if it has recently been running.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from Cylinder 1.
  • Unplug the electrical connector from the ignition coil.
  • Remove the bolts securing the ignition coil and pull it out.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or damage and replace it if necessary.
• Install the new spark plug and torque it to the manufacturer's specifications (typically around 22 ft-lbs).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, proceed to the ignition coil.
• Tools Required: Ratchet, socket set.
• Remove the ignition coil for Cylinder 1 as previously outlined.
• Replace with a new ignition coil specific to the Volkswagen Golf.
• Reinstall and secure the ignition coil.

4. Test and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, safety glasses.
• Disconnect the fuel line and electrical connector from the fuel injector.
• Remove the fuel injector from Cylinder 1.
• Test the injector's resistance with a multimeter; if outside the recommended range, replace the injector.
• Install the new fuel injector and reconnect the fuel line and electrical connector.

5. Conduct Compression Test (if misfire persists)

• Tools Required: Compression gauge.
• Remove all spark plugs for easier access.
• Insert the compression gauge into Cylinder 1 and crank the engine.
• Compare the reading to the manufacturer’s specifications; if low, further investigation into internal engine issues is required.