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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid any electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench, dielectric grease.
• Remove the engine cover (if applicable) to access the ignition components.
• Disconnect the ignition coil connector.
• Remove the ignition coil using a socket wrench.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or damage; replace with a new spark plug if necessary (use OEM specifications).
• Apply dielectric grease to the ignition coil boot.
• Reinstall the spark plug and ignition coil, ensuring they are properly torqued (typically 12-15 ft-lbs).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• If the spark plug is in good condition, inspect the ignition coil for cracks or damage.
• Replace the ignition coil if necessary by removing it and installing the new unit.
• Torque the coil to the manufacturer’s specifications.

4. Check Fuel Injector

• Tools Required: Fuel injector testing kit (if available).
• Inspect the fuel injector wiring for damage.
• Test the fuel injector operation using a multimeter or injector tester.
• Replace the fuel injector if it is not operating correctly.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug for cylinder 1 and connect the compression tester.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications; if low, further investigation into internal engine components may be required.