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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety during repairs.
• Allow the engine to cool completely before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the engine cover if applicable.
• Disconnect the ignition coil's electrical connector.
• Unbolt and remove the ignition coil from cylinder one.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if damaged or fouled.
• Install the new spark plug by hand to avoid cross-threading, then torque to the manufacturer’s specifications (usually around 22 ft-lbs).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil

• Tools Required: Socket set, torque wrench
• If the ignition coil shows signs of failure, remove it from the engine.
• Install the new ignition coil, ensuring proper alignment.
• Torque to the manufacturer’s specifications (usually 5-7 ft-lbs).
• Reconnect the ignition coil electrical connector.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit (if cleaning), or a replacement injector
• Access the fuel injector for cylinder one.
• Disconnect the fuel injector electrical connector and fuel line (safety: relieve fuel pressure first).
• Remove the fuel injector.
• If cleaning, use the cleaning kit to flush the injector. If replacing, install the new injector and ensure it is seated properly.
• Reconnect the fuel line and electrical connector.

5. Perform Compression Test (if needed)

• Tools Required: Compression tester
• Remove the spark plug from cylinder one.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds to get a reading.
• Compare the compression reading with manufacturer specifications. Low compression may indicate internal engine issues.