what does P0302 code mean for my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Gather tools and replacement parts as needed.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 2:
  • Unplug the electrical connector from the ignition coil.
  • Remove the mounting bolts (usually Torx or socket) and lift out the ignition coil.
• Inspect the spark plug:
  • Use a socket wrench to remove the spark plug from cylinder 2.
  • Check for signs of wear or damage (e.g., carbon build-up, wear on the electrode).
• Replace spark plug if necessary:
  • Install a new spark plug with the correct gap specification.
  • Torque the spark plug to manufacturer's specifications (typically around 20 Nm).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Test and Replace Ignition Coil (if needed)

• Use a multimeter to test the resistance of the ignition coil:
  • Check primary and secondary resistance according to specifications (refer to service manual).
• Replace the ignition coil if the resistance is out of specification:
  • Install the new ignition coil and torque the mounting bolts to specification.

4. Check Fuel Injector Operation

• Connect a fuel injector tester or use a noid light to check the signal to the injector:
  • If no signal is detected, inspect the wiring and connectors.
• Replace the fuel injector if it fails the test:
  • Remove the fuel rail if necessary to access the injector.
  • Install the new injector and ensure proper sealing.