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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shock.
• Allow the engine to cool down.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, basic hand tools
• Check all vacuum hoses connected to the intake manifold for cracks or disconnections.
• Use a vacuum gauge to test for leaks; repair or replace any faulty hoses.
• Inspect the intake manifold gasket and replace if damaged.

3. Clean the Mass Air Flow Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Remove the MAF sensor using a screwdriver.
• Spray MAF sensor cleaner on the sensor element and allow it to dry completely.
• Reinstall the sensor carefully, ensuring a good seal.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail test port.
• Start the engine and observe the fuel pressure reading; it should be within manufacturer specifications (refer to the service manual for specific values).
• If pressure is low, check the fuel pump and fuel filter for issues and replace them if needed.

5. Inspect Fuel Injectors

• Tools Required: Basic hand tools, fuel injector cleaner
• Remove fuel injectors from the engine.
• Inspect for clogs or damages; clean or replace as necessary.
• Ensure proper seating and connection before reinstallation.

6. Clear Codes and Test Drive

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code.
• Conduct a test drive to ensure the vehicle operates normally without the check engine light reappearing.