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

Solution

1. Preparation

• Gather all tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge.
• Sub-steps:
  1. Remove the air intake duct and visually inspect all hoses and connections for cracks, wear, or loose fittings.
  2. Use a vacuum gauge to test for leaks in the intake manifold and hoses.
  3. If any leaks are found, replace the damaged hoses or gaskets as necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, Torx screwdriver.
• Sub-steps:
  1. Remove the MAF sensor from the air intake duct.
  2. Clean the MAF sensor using MAF cleaner; do not touch the sensor element.
  3. If cleaning does not resolve the issue, replace the MAF sensor with a new one.

4. Inspect and Test Fuel System

• Tools Required: Fuel pressure gauge, socket set.
• Sub-steps:
  1. Attach a fuel pressure gauge to the fuel rail test port.
  2. Turn the ignition to the ON position (do not start the engine) and observe the pressure.
  3. If pressure is below specifications, inspect and replace the fuel pump or fuel filter as needed.

5. Check and Repair Exhaust System

• Tools Required: Visual inspection tools, exhaust pipe cutter (if necessary).
• Sub-steps:
  1. Inspect the exhaust system for any visible leaks or damage.
  2. If leaks are found, repair or replace the affected sections of the exhaust system.

6. Replace Oxygen Sensor (if required)

• Tools Required: Oxygen sensor socket, wrench.
• Sub-steps:
  1. Locate the oxygen sensor for bank 2 (usually found downstream of the catalytic converter).
  2. Disconnect the sensor's electrical connector.
  3. Use an oxygen sensor socket to remove the old sensor and install the new one, following torque specifications.