what does it mean if my BMW X3 G01 (2018-2024) has a P0302 code?

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil and spark plug from cylinder 2.
• Inspect the spark plug for signs of wear or damage; replace if necessary.
• Use a torque wrench to install the new spark plug to the manufacturer's specification (typically around 20 Nm).
• Reinstall the ignition coil, ensuring it's seated properly.

3. Inspect and Replace Ignition Coil

• If the ignition coil was found to be faulty, remove it from cylinder 2.
• Install a new ignition coil, ensuring it is properly connected to the wiring harness.
• Reconnect the battery.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 2.
• Inspect for clogs or leaks; clean it with appropriate cleaning solution or replace if necessary.
• Reinstall the fuel injector, ensuring it's seated correctly and reattach any retaining clips.

5. Conduct Compression Test

• If misfire persists, perform a compression test on cylinder 2.
• Record the compression readings and compare against manufacturer specifications.
• If compression is low, further engine diagnostics may be needed (e.g., valve or head gasket issues).