how to fix P0301 cylinder 1 misfire code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Ensure the engine is cool before beginning work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the engine cover (if applicable) to access the spark plug.
• Disconnect the ignition coil connector and remove the ignition coil.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install the new spark plug and torque it to the manufacturer's specification (typically around 20 Nm).
• Reinstall the ignition coil and connect the coil connector.

3. Check and Replace Ignition Coil

• If the ignition coil shows signs of damage or malfunction, replace it.
• Tools Required: Socket set
• Remove the ignition coil as described in the previous step.
• Install the new ignition coil and ensure it is seated properly.
• Reconnect the ignition coil connector.

4. Inspect and Replace Fuel Injector

• Check the fuel injector for proper operation.
• Tools Required: Noid light or multimeter
• If the injector is not functioning correctly, disconnect it and remove it from the cylinder head.
• Install the new fuel injector, ensuring it is seated properly, and reconnect the fuel line and electrical connector.

5. Perform Compression Test

• Tools Required: Compression gauge
• Remove the spark plug from cylinder 1.
• Insert the compression gauge into the spark plug hole and crank the engine.
• Compare the compression reading to manufacturer's specifications. Replace the engine if compression is low.