how to fix P0302 code in BMW 5 Series F10/F11 (2010-2017)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface, and the engine is cool before beginning work.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Unplug the electrical connector from the ignition coil.
  • Remove the bolt securing the ignition coil using a socket wrench.
  • Gently pull the ignition coil out of the spark plug well.
• Remove the spark plug:
  • Use a spark plug socket to carefully unscrew and remove the spark plug from cylinder 2.
• Inspect the spark plug for wear, deposits, or damage. Replace if necessary with the manufacturer's recommended spark plug.

3. Inspect and Replace Ignition Coil

• If the ignition coil is faulty:
  • Install the new ignition coil into cylinder 2.
  • Secure it with the bolt and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• If the fuel injector is not functioning properly:
  • Disconnect the electrical connector from the fuel injector.
  • Remove the fuel injector using the appropriate tool.
  • Clean or replace the fuel injector as necessary.

5. Reassembly

• Reinstall the spark plug and ignition coil in the correct order.
• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.