how to fix P0174 code in Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery negative terminal to ensure safety.

2. Inspect and Repair Intake Leaks

• Tools Required: Socket set, vacuum gauge
• Inspect all hoses connected to the intake manifold for cracks or disconnections.
• Use a vacuum gauge to check for leaks that may not be visible.
• Replace any damaged hoses or gaskets identified during the inspection.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner
• Remove the MAF sensor from the air intake system.
• Spray the MAF sensor with the specialized cleaner and allow it to dry completely.
• Reinstall the MAF sensor, ensuring it is securely fastened.

4. Check and Clean Throttle Body

• Tools Required: Throttle body cleaner, soft cloth
• Remove the throttle body assembly from the intake.
• Use throttle body cleaner to clean the interior surfaces and the throttle plate.
• Reinstall the throttle body, ensuring all gaskets are in good condition.

5. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (do not start) and check the pressure reading.
• If the pressure is outside the manufacturer's specifications, check the fuel pump and filter.

6. Inspect and Test Fuel Injectors

• Tools Required: Multimeter, fuel injector cleaner
• Use a multimeter to check the resistance of each fuel injector; it should match manufacturer specifications.
• If an injector is faulty, replace it.
• Optionally, use a fuel injector cleaning kit to clean them if they are clogged.