how to fix P0174 code in Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical issues.
• Allow the engine to cool completely before starting any work.

2. Inspect and Repair Vacuum Leaks

• Sub-steps:
  1. Visually inspect all vacuum hoses for cracks or loose connections.
  2. Use a smoke machine or carburetor cleaner to identify leaks while the engine is running.
  3. Replace any damaged hoses or reconnect loose connections.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor in the air intake system.
  2. Disconnect the electrical connector and remove the sensor using a Torx screwdriver.
  3. Clean the MAF sensor with MAF cleaner spray. Allow it to dry completely.
  4. If damaged, replace it with a new sensor and reconnect.

4. Test and Replace Fuel Injectors (if necessary)

• Sub-steps:
  1. Disconnect the fuel lines from the fuel rail using a fuel line tool.
  2. Remove the fuel rail and injectors from the intake manifold.
  3. Inspect each fuel injector for clogs and test their resistance with a multimeter.
  4. Replace any faulty injectors and reinstall the fuel rail.

5. Check and Adjust Fuel Pressure

• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail test port.
  2. Turn the ignition to the "ON" position (do not start) to check fuel pressure.
  3. Compare the reading with manufacturer specifications; replace the fuel pump or filter if needed.