how to fix the P0302 code in my BMW X5 F15 (2014-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Socket set (10mm and 16mm), torque wrench.
• Remove the ignition coil cover (if applicable) using a socket wrench.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil using a socket wrench.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the old spark plug for signs of wear or damage.
• Install the new spark plug, hand-tighten, and then torque to manufacturer's specifications (usually around 22 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil

• If the ignition coil was found faulty during the inspection, replace it.
• Tools Required: Socket set, torque wrench.
• Remove the old ignition coil as described above.
• Install the new ignition coil, ensuring it is seated correctly, and torque to manufacturer specifications (usually around 10-15 lb-ft).

4. Clean or Replace Fuel Injector

• If the fuel injector is clogged or faulty, it may need to be cleaned or replaced.
• Tools Required: Fuel injector removal tool, cleaning kit (if cleaning).
• Disconnect the fuel line (ensure to relieve fuel pressure first).
• Remove the fuel rail if necessary to access the injector.
• Clean the injector with an appropriate cleaning solution or replace with a new injector.
• Reinstall the fuel rail and reconnect the fuel line.

5. Recheck and Reassemble

• Reconnect the battery terminal.
• Clear the codes using the OBD-II scanner.
• Start the engine and allow it to idle to ensure smooth operation.