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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers
• Sub-steps:
  1. Remove the air intake duct by loosening the clamps and disconnecting any sensors.
  2. Inspect the duct for cracks or signs of wear; replace if damaged.
  3. Check all vacuum hoses connected to the intake manifold for leaks or cracks; replace as necessary.
  4. Reattach the air intake duct and ensure all connections are secure.

3. Test and Clean the MAF Sensor

• Tools Required: MAF sensor cleaner or electrical parts cleaner
• Sub-steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the intake manifold.
  3. Clean the sensor wire gently with MAF cleaner. Do not touch the wire with fingers.
  4. Allow the sensor to dry completely before reinstalling.
  5. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, wrench set
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail service port.
  2. Turn the ignition to the "ON" position without starting the engine and check the pressure reading against specifications (typically around 40-50 psi).
  3. If pressure is low, inspect the fuel pump and filter for issues; replace if necessary.
  4. If the pressure is adequate, check the fuel injectors for clogs or leaks; clean or replace as needed.

5. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket, multimeter (if testing sensors)
• Sub-steps:
  1. Locate the oxygen sensor for Bank 2 (usually after the catalytic converter).
  2. Disconnect the sensor electrical connector.
  3. Remove the oxygen sensor using an O2 sensor socket.
  4. Inspect the sensor for damage or contamination. Replace if necessary.
  5. Reinstall the new or cleaned sensor and reconnect the electrical connector.