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

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative battery terminal.
• Allow the engine to cool down.

2. Inspect and Repair Air Intake

• Tools Required: Socket set, screwdrivers, vacuum gauge
• Remove the engine cover if applicable.
• Inspect all vacuum hoses for cracks or disconnections; replace any damaged hoses.
• Check the intake manifold gasket; replace if there are signs of wear or damage.
• Tighten any loose clamps on the air intake.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner (non-residue), Torx screwdriver
• Disconnect the MAF sensor connector.
• Remove the MAF sensor from the intake tract.
• Clean the sensor with MAF cleaner and allow it to dry completely.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Adjust Fuel System

• Tools Required: Fuel pressure gauge
• Attach the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "On" position (do not start the engine) and check the fuel pressure against manufacturer specifications (typically 50-60 psi).
• If pressure is low, inspect the fuel pump, fuel filter, and fuel injectors for issues; replace any faulty components.

5. Inspect and Replace ECT Sensor (if necessary)

• Tools Required: Socket set, coolant catch pan
• Locate the ECT sensor on the engine.
• Disconnect the electrical connector and remove the sensor.
• Install a new ECT sensor and reconnect the connector.
• Refill any lost coolant and check for leaks.