how to fix P0174 code in Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, flashlight
• Instructions:
  1. Visually inspect all air intake components for cracks or loose connections.
  2. Tighten any loose clamps or replace any damaged hoses.
  3. Reconnect all components securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Instructions:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor.
  3. Spray MAF sensor cleaner onto the sensor elements; allow it to dry completely.
  4. Reinstall the sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Instructions:
  1. Locate the fuel rail and connect the fuel pressure gauge.
  2. Turn the ignition key to the "ON" position (do not start the engine) to check the fuel pressure.
  3. Compare the reading to manufacturer specifications (usually around 40-50 psi for Honda).
  4. If pressure is low, check fuel pump operation and replace if necessary.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaner, multimeter (for electrical testing)
• Instructions:
  1. Remove the fuel rail (if required) to access the injectors.
  2. Inspect injectors for clogs and clean them using fuel injector cleaner.
  3. Test the electrical connections to the injectors using a multimeter to ensure they are receiving power.

6. Verify Vacuum Leak Repairs

• Tools Required: Smoke machine (optional)
• Instructions:
  1. Use a smoke machine to introduce smoke into the intake system (if available) to find any remaining leaks.
  2. Listen for hissing sounds around vacuum lines and intake manifold.
  3. Seal any leaks found with appropriate repair materials.