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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid any electrical shorts.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge.
• Remove the air intake duct and inspect for cracks or leaks.
• If leaks are found, replace the affected hoses or duct.
• Reconnect the air intake duct securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver.
• Carefully disconnect the MAF sensor connector.
• Remove the MAF sensor from the air intake.
• Clean the sensor using MAF sensor cleaner (do not touch the sensor element).
• If the sensor is damaged, replace it with a new one.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, socket set.
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition key to the "ON" position (do not start) to check fuel pressure.
• Compare the reading with manufacturer specifications (typically 30-50 PSI).
• If pressure is low, inspect and replace the fuel pump or filter as necessary.

5. Inspect Vacuum Lines

• Visually inspect all vacuum lines for cracks or disconnections.
• Replace any damaged vacuum hoses to ensure proper sealing.

6. Check Engine Coolant Temperature Sensor

• Tools Required: Multimeter.
• Locate the coolant temperature sensor and disconnect the electrical connector.
• Use a multimeter to check the resistance of the sensor at various temperatures.
• Replace the sensor if it is outside the manufacturer specifications.