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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety before starting the repair.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the air intake hoses for cracks or loose fittings.
  2. Tighten or replace any loose clamps or damaged hoses.
  3. If leaks are found, replace the damaged components as needed.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Remove the sensor by unscrewing it or unclipping the connector.
  3. Clean the sensor with MAF cleaner; let it dry completely.
  4. If the sensor is damaged, replace it with a new one.

4. Test and Repair Fuel System

• Sub-steps:
  1. Attach the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "ON" position (do not start) and check the pressure against specifications.
  3. If pressure is low, inspect the fuel pump and filter for restrictions or failures.
  4. Replace the fuel filter if it is clogged and the fuel pump if it is not delivering adequate pressure.

5. Inspect Vacuum Lines

• Sub-steps:
  1. Check all vacuum lines connected to the intake manifold for cracks or loose connections.
  2. Replace any damaged vacuum lines and ensure all connections are secure.

6. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the battery terminals.
  2. Use the OBD-II scanner to clear the P0174 code.

Tools Required:

• OBD-II scanner
• Screwdrivers
• Torque wrench
• Fuel pressure gauge
• MAF cleaner
• Injector tester

Parts Required:

• Air intake hoses (if damaged)
• MAF sensor (if faulty)
• Fuel filter (if clogged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the engine to cool before inspecting or removing components.