how to fix P0174 code in Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery.
• Ensure the engine is cool before starting work.

2. Inspect and Repair Vacuum Leaks

• Visually inspect all vacuum hoses connected to the intake manifold.
• Use a smoke machine or carburetor cleaner to detect leaks; repair or replace any damaged hoses.

3. Test and Clean the MAF Sensor

• Remove the MAF sensor from the intake duct.
• Use MAF sensor cleaner to gently clean the sensor elements.
• Allow the sensor to dry completely before reinstalling.

4. Check and Adjust Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Start the engine and check that the fuel pressure is within the manufacturer's specifications (typically around 30-50 PSI).
• Replace the fuel pump or fuel filter if the pressure is low.

5. Inspect and Clean Fuel Injectors

• Remove the fuel injectors from the engine.
• Use an injector cleaning kit to clean each injector thoroughly.
• Reinstall the injectors and ensure proper seals are used.

6. Reassemble and Reconnect Components

• Reinstall any components removed during the diagnostic process.
• Reconnect the battery and ensure all connections are tight.