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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to prevent electrical shorts during the repair.
• Allow the engine to cool down before beginning work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1.
  • Tools Required: Socket set, ratchet.
• Remove the spark plug using a spark plug socket.
  • Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one.
  • Installation: Torque the new spark plug to the manufacturer's specification (typically around 22 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil.
  • Use a multimeter to check the resistance of the ignition coil.
• Replace the ignition coil if it shows signs of malfunction.
  • Install the new ignition coil onto the spark plug.

4. Check and Clean Fuel Injector

• Remove the fuel injector from cylinder 1.
  • Tools Required: Fuel line disconnect tool, socket set.
• Inspect the fuel injector for clogs or damage.
• Clean the fuel injector using a fuel injector cleaning kit or replace it if necessary.

5. Compression Test (if needed)

• If the misfire persists, perform a compression test on cylinder 1.
  • Remove the spark plug and install a compression gauge.
  • Crank the engine and record the compression reading.
  • Ensure the compression is within the manufacturer’s specifications (typically around 150 psi).

6. Reassemble and Test

• Reinstall all components in reverse order of removal.
• Reconnect the battery.