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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the engine to cool if it has been recently running.

2. Inspect the Air Intake System

• Tools Required: Vacuum gauge, flashlight
• Instructions:
  1. Use the vacuum gauge to check for leaks in the intake system.
  2. Visually inspect all intake hoses and gaskets for cracks or disconnections.
  3. Replace any damaged components.

3. Check and Clean the MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver
• Instructions:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector.
  3. Remove the MAF sensor using a Torx screwdriver.
  4. Spray MAF sensor cleaner onto the sensor element, avoiding contact with the wires.
  5. Allow it to dry before reinstalling.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
• Instructions:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "ON" position without starting the engine to check the pressure.
  3. Compare the reading to manufacturer specifications (typically around 40-50 psi). Replace the fuel pump if it is below specifications.

5. Inspect and Test Fuel Injectors

• Tools Required: Multimeter, injector cleaner
• Instructions:
  1. Disconnect the fuel injector connectors.
  2. Use a multimeter to check for proper resistance (usually around 12-16 ohms).
  3. If any injectors are out of specification, replace them.
  4. Optionally, run an injector cleaning service if injectors are blocked.