how to fix P0301 code in Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather tools and parts. Ensure the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the bolts.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary. Use a spark plug with the specification of OEM or equivalent.
• Torque the new spark plug to 22 lb-ft (30 Nm).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, proceed to the ignition coil.
• Tools Required: Socket set.
• Remove the ignition coil and inspect it for cracks or signs of failure.
• Install a new ignition coil, ensuring it is seated properly, and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit or noid light.
• Disconnect the fuel injector connector for cylinder 1.
• Check the injector's resistance with a multimeter; it should typically be around 12-16 ohms for most injectors.
• Clean the injector with a cleaning kit or replace if it is faulty.

5. Reassemble and Test

• Reconnect all components and ensure all connections are secure.
• Reconnect the negative battery terminal.
• Start the vehicle and monitor for the check engine light.