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

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, compression tester, fuel injector cleaning kit.
• Disconnect the negative battery terminal to prevent electrical shock.
• Allow the engine to cool before commencing work.

2. Inspect and Replace Ignition Coil

• Sub-steps:
  1. Remove the engine cover if necessary to access the ignition coil.
  2. Disconnect the electrical connector from the ignition coil.
  3. Remove the ignition coil from cylinder 2 using a socket and ratchet.
  4. Install a new ignition coil and torque it to the manufacturer's specifications.
  5. Reconnect the electrical connector and replace the engine cover.

3. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 2 again to access the spark plug.
  2. Use a spark plug socket to remove the old spark plug.
  3. Inspect the spark plug for wear or fouling; replace if necessary.
  4. Gap the new spark plug according to manufacturer's specifications.
  5. Install the new spark plug and torque to the specified value.
  6. Reinstall the ignition coil.

4. Check and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector on cylinder 2.
  2. Remove the fuel injector using a fuel injector puller or socket, if applicable.
  3. Clean the fuel injector using a fuel injector cleaning kit or replace it with a new injector.
  4. Reinstall the fuel injector and reconnect the electrical connector.

5. Perform Compression Test (if necessary)

• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine a few times and record the reading.
  4. Compare the reading to the manufacturer's specifications; if low, further investigation is needed.