how to fix P0302 misfire code on BMW X5 G05 (2019-2024)

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the negative battery terminal to ensure safety during repairs.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter
• Fuel injector cleaning kit (if necessary)

2. Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Locate the spark plug for cylinder 2.
• Use a spark plug socket to remove the old spark plug.
• Inspect the old spark plug for carbon buildup or damage.
• Install a new spark plug, torque it to the manufacturer’s specifications (typically around 18-25 Nm).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 2 using a socket set.
• Inspect the ignition coil for signs of damage.
• Install a new ignition coil and reconnect the electrical connector.

4. Compression Test

• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds and read the compression value.
• If the compression is below the manufacturer's specifications, further investigation is needed (e.g., valve issues, piston rings).

5. Inspect and Clean Fuel Injector

• Disconnect the fuel line (use caution and follow safety procedures).
• Remove the fuel injector for cylinder 2.
• Inspect the injector for clogs or deposits.
• Clean the injector using a fuel injector cleaning kit or replace it if necessary.
• Reinstall the injector and reconnect the fuel line.