how to fix P0174 code in BMW X3 G01 (2018-2024)?

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool completely before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, vacuum gauge.
• Check all air intake hoses for cracks or loose connections.
• Replace any damaged hoses.
• Inspect the intake manifold gasket for leaks and replace if necessary.

3. Clean the Mass Airflow Sensor

• Tools Required: MAF cleaner.
• Carefully remove the MAF sensor from the air intake system.
• Spray MAF cleaner on the sensor element and allow it to dry completely before reinstalling.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "On" position without starting the engine to check fuel pressure.
• If pressure is below specifications, inspect the fuel pump and fuel filter, and replace as needed.

5. Inspect and Clean Throttle Body

• Tools Required: Throttle body cleaner and a soft cloth.
• Remove the throttle body from the intake manifold.
• Use throttle body cleaner to remove carbon buildup and residue.
• Reinstall the throttle body ensuring proper torque specifications are followed.

6. Verify Injector Functionality

• Tools Required: Injector cleaning kit.
• If injectors are suspected to be faulty, remove and clean them using an injector cleaning kit or replace them if necessary.