how to fix P0301 code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery (negative terminal).
• Allow the engine to cool to avoid burns.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench, dielectric grease
• Remove the ignition coil for cylinder 1 by unscrewing the mounting bolts and disconnecting the electrical connector.
• Remove the old spark plug using the spark plug socket.
• Inspect the spark plug hole for debris; clean if necessary.
• Install the new spark plug with a torque specification of 20 Nm (15 lb-ft).
• Apply dielectric grease to the ignition coil boot before reinstallation.

3. Replace Ignition Coil

• Remove the ignition coil for cylinder 1 as described above.
• Disconnect the electrical connector and remove the ignition coil.
• Install the new ignition coil and reconnect the electrical connector.
• Ensure it is seated properly and securely fastened.

4. Check and Replace Fuel Injector (if necessary)

• Disconnect the fuel line (use a fuel line removal tool if needed) and the electrical connector from the fuel injector for cylinder 1.
• Remove the injector from the rail.
• Install the new injector and reconnect the fuel line and the electrical connector.
• Ensure all connections are secure and free of leaks.

5. Perform a Final Check

• Reconnect the battery.
• Start the engine and allow it to idle.
• Monitor for any check engine light illumination and listen for smooth operation.