what does error code P0302 mean for my BMW 5 Series F10/F11 (2010-2017)

Solution

1. Preparation

• Gather necessary tools and materials.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical shorts.

2. Replace Spark Plug

• Remove the ignition coil for cylinder 2:
  • Disconnect the electrical connector.
  • Remove the mounting bolts using a socket set.
  • Gently pull out the ignition coil.
• Remove the spark plug:
  • Use a spark plug socket and ratchet to unscrew the spark plug.
  • Inspect the old spark plug for signs of fouling or wear.
• Install the new spark plug:
  • Ensure the spark plug gap is set to the manufacturer specifications.
  • Screw in the new spark plug by hand to avoid cross-threading, then tighten to the specified torque (typically 15-20 ft-lbs).

3. Replace Ignition Coil

• Install the new ignition coil:
  • Insert the ignition coil into the spark plug well.
  • Tighten the mounting bolts to the manufacturer’s specifications.
  • Reconnect the electrical connector ensuring a secure fit.

4. Check Fuel Injector

• Inspect the fuel injector for cylinder 2:
  • Remove any necessary components to access the fuel injector.
  • Test the injector for resistance using a multimeter; compare results to specifications.
  • If faulty, replace the fuel injector.

5. Reconnect Battery and Clear Codes

• Reconnect the battery.
• Use an OBD-II scanner to clear the P0302 code from the system.