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

Solution

1. Preparation

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

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, and a flashlight.
• Sub-steps:
  1. Use a vacuum gauge to check for leaks in the intake system.
  2. Inspect all hoses and gaskets for cracks or disconnections.
  3. Replace any damaged hoses or gaskets.

3. Check and Clean the MAF Sensor

• Tools Required: MAF sensor cleaner or isopropyl alcohol, soft brush.
• Sub-steps:
  1. Locate the MAF sensor (usually between the air filter and throttle body).
  2. Disconnect the electrical connector from the MAF sensor.
  3. Remove the MAF sensor from the intake using a screwdriver.
  4. Clean the sensor wires with MAF cleaner or isopropyl alcohol and a soft brush.
  5. Allow it to dry completely before reinstalling.

4. Test and Replace Fuel Injectors (if necessary)

• Tools Required: Fuel pressure gauge, injector cleaning kit (if needed).
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Start the engine and monitor fuel pressure; it should meet manufacturer specifications (check service manual).
  3. If pressure is low, check the fuel filter and pump; replace as necessary.
  4. If injectors are suspected to be clogged, use an injector cleaning kit to clean them, or replace them if cleaning does not resolve the issue.

5. Reassemble and Reconnect

• Reinstall any components removed during inspection and repair.
• Reconnect the negative battery terminal.