my Volkswagen Golf MK7.5 (2020-Present) has a check engine light and P0302 code, what does that mean...

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench, gap tool.
• Remove the engine cover if necessary.
• Remove the spark plug wire or ignition coil from cylinder 2.
• Use the spark plug socket to carefully unscrew and remove the spark plug.
• Inspect the spark plug for wear or damage (check for carbon buildup or cracks).
• Replace with a new spark plug if necessary. Ensure it is gapped according to specifications (usually around 0.028-0.032 inches).
• Reinstall the spark plug, torquing it to the manufacturer's specifications (typically around 15-20 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Ratchet, socket set.
• If the spark plug is fine, remove the ignition coil from cylinder 2.
• Inspect for cracks or carbon tracking on the coil.
• Replace the ignition coil with a new unit if damaged.
• Reinstall the ignition coil and ensure it is seated properly.

4. Check Fuel Injector

• Tools Required: Fuel pressure gauge, multimeter (if testing electrical).
• Disconnect the fuel injector connector for cylinder 2.
• Use the multimeter to check for proper voltage and resistance at the connector.
• If the fuel injector is not functioning, replace it with a new one.
• Reconnect the fuel injector connector.

5. Final Checks

• Reconnect any components removed during the repair.
• Reconnect the negative battery terminal.
• Clear the P0302 code using an OBD-II scanner.