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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool down before beginning work.

2. Replace Spark Plug

• Required Tools: Spark plug socket, ratchet, torque wrench
• Remove the engine cover if applicable.
• Detach the ignition coil connector from the spark plug.
• Remove the ignition coil by unscrewing it from the cylinder head.
• Extract the old spark plug using a spark plug socket.
• Inspect the old spark plug for signs of fouling or wear.
• Install the new spark plug and torque it to the manufacturer specifications (usually around 20 Nm).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Required Tools: Torque wrench
• If the ignition coil shows signs of failure during inspection, replace it with a new unit.
• Install the new ignition coil and torque it to the required specification (usually around 10 Nm).
• Reconnect the ignition coil connector.

4. Check/Replace Fuel Injector (if necessary)

• Required Tools: Fuel injector puller (if required), socket set
• If the injector is clogged, remove it from the fuel rail.
• Clean the injector using a cleaning solution or replace it with a new one.
• Reinstall the fuel injector, ensuring it is seated properly in the fuel rail.

5. Reassemble and Test

• Reattach the engine cover.
• Reconnect the negative battery terminal.
• Start the engine and check for any abnormal noises or issues.