what does it mean if my BMW X5 G05 (2019-2024) 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 negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Using a spark plug socket, carefully remove the spark plug from cylinder 2.
• Inspect the spark plug for signs of wear or damage, and replace it if necessary.
• Torque the new spark plug to the manufacturer’s specifications (typically around 15-20 lb-ft).

3. Check and Replace Ignition Coil

• Locate the ignition coil for cylinder 2.
• Disconnect the electrical connector and remove the coil by unfastening any securing bolts.
• Inspect the coil for cracks or damage, and replace it if necessary.
• Reinstall the coil and reconnect the electrical connector. Torque to manufacturer specifications.

4. Perform Compression Test

• Remove the spark plug from cylinder 2 and insert a compression gauge.
• Crank the engine several times and record the compression reading.
• Compare to specifications; if low, further investigation into engine internals may be necessary.

5. Inspect Fuel Injector

• Locate the fuel injector for cylinder 2.
• Disconnect the electrical connector and remove the fuel rail if necessary.
• Inspect the injector for clogs or leaks.
• If defective, replace the fuel injector and reassemble the fuel rail.