how to fix P0302 code in BMW 5 Series G30/G31 (2017-2024)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent any electrical short circuits.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 2.
• Use a socket wrench to carefully remove the spark plug.
• Inspect the electrode for wear and replace with a new spark plug (specifications: NGK P/N: ILZKR7B8D).
• Torque the new spark plug to manufacturer specifications (typically around 20 Nm).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the ignition coil using a socket wrench.
• Inspect the coil for cracks or damage; replace if necessary (compatible part: Bosch 0221504472).
• Reinstall the new ignition coil and reconnect the electrical connector.

4. Test and Replace Fuel Injector (if necessary)

• Disconnect the fuel line and electrical connector from the fuel injector for cylinder 2.
• Remove the fuel injector using appropriate tools.
• Test the injector's operation with a multimeter or replace it if faulty (compatible part: Siemens P/N: 13537597853).
• Reinstall the new fuel injector ensuring proper seating and reconnect the electrical connector.

5. Check for Vacuum Leaks

• Inspect vacuum hoses around the intake manifold for cracks or disconnections.
• Replace any damaged hoses to ensure proper vacuum levels.

6. Reconnect Battery and Clear Codes

• Reconnect the car battery.
• Use the OBD-II scanner to clear the P0302 code and any other stored codes.