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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery cable to ensure safety.
• Allow engine to cool if it has been running.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, screwdrivers
• Sub-steps:
  1. Use a vacuum gauge to test vacuum at the intake manifold.
  2. Visually inspect all vacuum hoses for cracks, splits, or disconnections.
  3. Repair or replace any damaged hoses and ensure all connections are secure.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver
• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Carefully disconnect the electrical connector from the MAF sensor.
  3. Remove the MAF sensor using the Torx screwdriver.
  4. Clean the MAF sensor using the MAF cleaner, following the instructions on the cleaner.
  5. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge, socket set
• 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 key to the "ON" position (do not start the engine) and read the pressure.
  4. Compare the reading to manufacturer specifications (typically 40-50 psi).
  5. If pressure is low, check fuel pump and filter for issues.

5. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaning kit, socket set
• Sub-steps:
  1. Remove the fuel rail with injectors attached from the engine.
  2. Use the fuel injector cleaning kit to clean the injectors according to the kit instructions.
  3. Reinstall the injectors and fuel rail, ensuring proper sealing and connections.