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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shocks.

2. Inspect and Repair Intake System

• Tools Required: Socket set, screwdriver, vacuum gauge.
• Remove the engine cover (if applicable) to access the intake manifold.
• Inspect all intake hoses and connections for cracks or loose fittings. Replace any damaged hoses.
• Check the intake manifold gasket for leaks and replace if necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver.
• Disconnect the MAF sensor connector.
• Remove the MAF sensor from the intake duct.
• Clean the MAF sensor with MAF cleaner and allow it to dry. If damaged, replace it with a new unit.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, rags.
• Locate the fuel rail and connect the fuel pressure gauge to the test port.
• Turn the ignition to the "ON" position (do not start the engine) to check fuel pressure. It should be within the manufacturer's specifications.
• If pressure is low, inspect the fuel pump, filter, and relay for faults. Replace any defective components.

5. Inspect Fuel Injectors

• Tools Required: Injector cleaner, multimeter (for electrical testing).
• Remove the fuel rail to access the fuel injectors.
• Inspect each injector for physical damage or blockage. Clean or replace as necessary.
• Test the electrical connections to ensure injectors are receiving adequate voltage.