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

Solution

1. Preparation

• Gather 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, flashlight
• Remove the engine cover (if applicable) to access the air intake components.
• Inspect the air intake duct for cracks or loose connections; replace any damaged components.
• Check the air filter and replace it if it’s dirty or clogged.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner or isopropyl alcohol, soft cloth
• Locate the MAF sensor on the air intake duct.
• Carefully remove the MAF sensor using the appropriate socket or screwdriver.
• Clean the MAF sensor with MAF cleaner; allow it to dry completely before reinstallation.
• If the sensor is damaged or heavily contaminated, replace it with a new one.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge, socket set
• Locate the fuel pressure test port on the fuel rail.
• Connect the fuel pressure gauge and turn the ignition to the "ON" position (do not start the engine).
• Check the fuel pressure reading; it should match the specifications for the Honda Pilot (typically around 40-50 psi).
• If the pressure is low, inspect the fuel pump and fuel filter for issues, and replace them as necessary.

5. Test and Repair Fuel Injectors

• Tools Required: Multimeter, fuel injector cleaning kit (if necessary)
• Disconnect the fuel injector connectors.
• Use a multimeter to check the resistance of each injector; compare readings against specifications.
• If any injector shows an abnormal reading, replace it. If they are dirty, consider using a fuel injector cleaning kit.

6. Inspect Vacuum Hoses and PCV System

• Tools Required: Visual inspection tools
• Check all vacuum hoses for cracks, loose connections, or signs of wear.
• Inspect the PCV valve for proper operation and replace it if it’s clogged or malfunctioning.