how to fix the P0301 code on my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical issues.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1.
  • Tools Required: Socket set, ratchet, extension.
• Remove the spark plug using a spark plug socket.
  • Inspect the spark plug for wear, carbon buildup, or oil contamination.
  • If the spark plug is damaged, replace it with a new one. Ensure the gap is set to manufacturer specifications (typically around 0.028 inches for VW).
• Reinstall the spark plug and torque it to the manufacturer's specifications (usually around 22 lb-ft).

3. Inspect and Replace Ignition Coil

• Test the ignition coil for cylinder 1.
  • If found faulty, disconnect the electrical connector and remove the ignition coil.
  • Install the new ignition coil, ensuring it is seated properly, and reconnect the electrical connector.
• Torque the mounting bolts to manufacturer specifications.

4. Inspect Fuel Injector

• Remove the fuel injector for cylinder 1 if injector issues are suspected.
  • Tools Required: Fuel line disconnect tool, appropriate sockets.
• Test the fuel injector for proper function using a noid light or multimeter.
• Replace the injector if it does not operate correctly.

5. Reassemble and Reconnect Battery

• Reinstall any components removed during the repair process.
• Reconnect the battery and ensure all electrical connections are secure.