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

Solution

1. Preparation

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

2. Inspect and Repair Intake System

• Inspect Air Filter and Ducts:

  • Remove the air filter and inspect for dirt or blockages.
  • Check the intake duct for cracks or loose connections.

• Tools Required: Flathead screwdriver, socket set.

• Action: Replace the air filter if dirty and secure any loose connections in the intake duct.

3. Clean MAF Sensor

• Access the MAF Sensor:

  • Locate the MAF sensor in the air intake duct.

• Clean the Sensor:

  • Use MAF sensor cleaner and a soft brush if necessary.
  • Spray the cleaner onto the sensor elements without touching them.

• Tools Required: MAF sensor cleaner, soft brush.

• Safety Warning: Allow the sensor to dry completely before reinstallation.

4. Check and Replace Fuel Filter (if needed)

• Locate Fuel Filter:

  • Identify the location of the fuel filter along the fuel line.

• Replace Fuel Filter:

  • Relieve fuel system pressure using the fuel pump relay or fuse.
  • Disconnect the fuel lines from the filter and install the new filter.

• Tools Required: Fuel line disconnect tool, wrench set.

• Torque Specification: Ensure all connections are secure as per manufacturer specifications.

5. Vacuum Leak Repair

• Inspect Vacuum Hoses:

  • Visually inspect all vacuum hoses for cracks, wear, or disconnections.

• Repair or Replace:

  • Replace any damaged hoses with new ones of appropriate size.

• Tools Required: Pliers, hose cutter.

6. Test Fuel Pressure

• Connect Fuel Pressure Gauge:

  • Attach the gauge at the fuel rail test port.

• Check Fuel Pressure:

  • Turn the ignition key to the ON position (do not start) and check the reading.

• Tools Required: Fuel pressure gauge.

• Specification: Refer to the manufacturer’s specifications for the correct fuel pressure range.