how to fix P0301 code in BMW X5 G05 (2019-2024)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle's battery to prevent electrical shorts.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plug

• Remove the engine cover to access the spark plugs.
• Use a spark plug socket and ratchet to unscrew the spark plug from cylinder 1.
• Inspect the old spark plug for wear or damage. If it appears faulty, replace it with a new spark plug matching OEM specifications.
• Torque the new spark plug to the manufacturer's recommended specification (usually around 22 lb-ft).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the ignition coil by unscrewing any retaining screws or bolts.
• Install the new ignition coil, ensuring it is seated properly.
• Reconnect the electrical connector securely.

4. Check Fuel Injector

• Locate the fuel injector for cylinder 1 and remove the electrical connector.
• Use a multimeter to test the injector's resistance; it should match the specifications in the service manual.
• If the injector is faulty, replace it with a new one, ensuring it is properly seated and connected.

5. Reassemble and Reconnect Battery

• Reinstall any components or covers removed during the process.
• Reconnect the vehicle's battery terminals ensuring a tight connection.