how to fix P0174 code in BMW X5 G05 (2019-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool down before starting any work.

2. Inspect and Clean MAF Sensor

• Remove the MAF sensor from the air intake duct.
• Use MAF sensor cleaner to spray the sensor element and allow it to dry completely.
• Reinstall the MAF sensor ensuring it is properly secured.

3. Check and Repair Vacuum Leaks

• Visually inspect all vacuum lines and hoses for wear or damage.
• Replace any damaged vacuum hoses with new ones.
• If leaks are found in the intake manifold, use a suitable gasket or sealant to repair them.

4. Fuel System Inspection

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition key to the "ON" position to prime the fuel system and check the pressure.
• If the pressure is below specifications (typically 50-60 psi for BMW engines), inspect the fuel pump and fuel filter for issues and replace if necessary.

5. Clear Codes and Test Drive

• After completing repairs, reconnect the battery and use the OBD-II scanner to clear the P0174 code.
• Perform a test drive to ensure the code does not return and the vehicle runs smoothly.