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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2 after unscrewing the retaining bolts.
• Extract the spark plug using a spark plug socket.
• Inspect the old spark plug for signs of wear or fouling.
• Install the new spark plug and torque it to the manufacturer's specification (typically around 20-30 Nm).
• Reattach the ignition coil ensuring a secure connection.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• If the spark plug replacement did not resolve the issue, remove the ignition coil for cylinder 2.
• Inspect for any visible damage or corrosion.
• Replace the ignition coil with a new one, ensuring it fits snugly and the electrical connector is secure.

4. Test Fuel Injector

• Tools Required: Fuel injector tester (if needed).
• Disconnect the fuel injector connector for cylinder 2.
• Use a multimeter or injector tester to check the injector for functionality.
• If faulty, replace the fuel injector with a new one.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading to the manufacturer's specifications; if low, further mechanical inspection may be necessary.