how to resolve the P0302 misfire code in BMW X5 G05 (2019-2024)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

1. Remove the engine cover to access the spark plugs.
2. Use a spark plug socket to remove the spark plug from cylinder 2.
3. Inspect the spark plug for signs of wear, carbon build-up, or damage.
4. If necessary, replace the spark plug with a new OEM-spec spark plug, ensuring the gap is set to manufacturer specifications (typically 0.028-0.032 inches).

3. Inspect and Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil on cylinder 2.
2. Remove the ignition coil by unscrewing any retaining bolts.
3. Inspect the ignition coil for cracks or damage; replace if necessary.
4. Install the new ignition coil and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector

1. Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
2. Disconnect the electrical connector from the fuel injector.
3. Remove the fuel injector retaining clip and carefully pull out the injector.
4. Inspect the injector for clogs or leaks; replace if faulty.
5. Install the new fuel injector, ensuring proper seating and reattach the retaining clip.

5. Reassemble and Test

1. Reinstall the fuel rail and ensure all connections are secure.
2. Reinstall the engine cover.
3. Reconnect the negative battery terminal.
4. Start the engine and check for any misfire codes.