how to fix P0174 code in Honda Pilot YF4 (2023-Present)

Solution

1. Preparation

• Gather tools and parts. Ensure the vehicle is on a level surface and the engine is cool.
• Tools Required: OBD-II scanner, multimeter, fuel pressure gauge, basic socket set, torque wrench.
• Safety Warnings: Disconnect the battery before working on electrical systems. Allow the engine to cool before opening any components.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the air intake hose and connections for any signs of wear or damage.
  2. Replace any damaged hoses or connections.
  3. Check the air filter and replace it if it is dirty or clogged.

3. Inspect and Test MAF Sensor

• Sub-steps:
  1. Disconnect the MAF sensor electrical connector.
  2. Using a multimeter, check the MAF sensor voltage output while the engine is running.
  3. If readings are outside the manufacturer's specified range, replace the MAF sensor.

4. Fuel Pressure Check

• Sub-steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Connect the fuel pressure gauge to the test port.
  3. Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure.
  4. If the pressure is below specified levels, inspect the fuel pump and filter for issues, replacing as necessary.

5. Check Exhaust for Leaks

• Sub-steps:
  1. Inspect the exhaust system visually and by touch for any leaks or damage.
  2. Use a smoke machine if necessary to identify leaks in the system.
  3. Repair or replace any damaged exhaust components.