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

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Fuel pressure gauge
• Socket set
• Torque wrench
• Multimeter
• MAF sensor cleaner
• Smoke machine (if available)

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect all hoses connected to the air intake for cracks or disconnections.
  • Replace any damaged hoses or clamps.
  • Tighten any loose connections to ensure a proper seal.

3. Test and Clean MAF Sensor

• Sub-steps:
  • Locate the MAF sensor in the air intake duct.
  • Disconnect the electrical connector and remove the sensor using a socket set.
  • Clean the MAF sensor wire with MAF sensor cleaner, allowing it to dry completely before reinstallation.
  • Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Sub-steps:
  • Attach the fuel pressure gauge to the fuel rail.
  • Turn the ignition to the ON position without starting the engine and check the pressure reading.
  • If the pressure is below specifications, inspect the fuel pump and filter for blockages and replace if necessary.

5. Inspect and Clean Fuel Injectors

• Sub-steps:
  • Remove the fuel rail and injectors using a socket set.
  • Inspect the injectors for clogs and use an injector cleaning kit if needed.
  • Reinstall the injectors and fuel rail, ensuring all connections are secure.

6. Reconnect Battery and Clear Codes

• Sub-steps:
  • Reconnect the battery terminals.
  • Use the OBD-II scanner to clear the P0174 code and any other stored codes.