what does a P0302 code mean for my Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to avoid any electrical shorts.
• Allow the engine to cool if it has been running.

2. Inspect Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil using a socket wrench.
• Inspect the spark plug for wear or damage; replace if necessary.
• Check the ignition coil for cracks or other damages; replace if necessary.

3. Check for Vacuum Leaks

• Tools Required: Smoke machine or carb cleaner.
• Visually inspect all vacuum hoses connected to the intake manifold.
• Use a smoke machine to detect vacuum leaks; if smoke escapes, repair the affected area.
• If using carb cleaner, spray around the intake manifold while the engine is running; an increase in RPM indicates a leak.

4. Test Fuel Injector

• Tools Required: Noid light or multimeter.
• Disconnect the fuel injector connector for cylinder 2.
• Connect a noid light to the injector connector and crank the engine; the light should flash indicating proper signal.
• If using a multimeter, check for voltage at the injector connector while cranking the engine.

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 for a few seconds and note the compression reading.
• Compare the reading to the manufacturer's specifications; a low reading indicates a potential internal engine issue.