what does it mean if my Volkswagen Golf MK7 (2015-2019) has a P0302 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical shorts.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate the spark plug for cylinder 2 (refer to the owner’s manual for cylinder layout).
3. Use a spark plug socket and ratchet to remove the spark plug.
4. Inspect the spark plug for wear, carbon buildup, or damage.
5. If necessary, replace the spark plug with a new one that meets OEM specifications (typically, a spark plug gap of 0.028-0.032 inches).
6. Reinstall the spark plug and torque it to the manufacturer’s specifications (usually around 22 lb-ft).

3. Inspect and Replace Ignition Coil

1. Disconnect the wiring harness from the ignition coil for cylinder 2.
2. Remove the ignition coil using a socket or ratchet.
3. Inspect the ignition coil for cracks or damage.
4. If necessary, replace the ignition coil with a new one that matches OEM specifications.
5. Reinstall the coil and reconnect the wiring harness securely.

4. Check Fuel Injector

1. Disconnect the fuel injector connector for cylinder 2.
2. Use a multimeter to test the resistance of the injector; compare it to the manufacturer’s specifications.
3. If the injector is faulty, replace it with a new one.
4. Reconnect the fuel injector and ensure it is seated properly.

5. Verify Repairs

1. Reconnect the battery.
2. Start the engine and let it idle for a few minutes to ensure proper operation.
3. Use an OBD-II scanner to clear the P0302 code and check for reoccurrence.
4. Test drive the vehicle to ensure the check engine light does not reappear and that performance is restored.