how to fix P0174 code in Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Vacuum gauge, socket set, screwdriver.
• Inspect all vacuum hoses and connections for cracks or disconnections.
• Use a vacuum gauge to check for leaks; replace any damaged hoses.
• Tighten any loose connections in the air intake system.

3. Fuel System Inspection

• 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 key to the "On" position without starting the engine; check the reading.
• If the pressure is below specifications, check the fuel pump and filter for clogs or failures; replace as necessary.

4. Clean or Replace the Mass Air Flow Sensor

• Tools Required: MAF cleaner, screwdriver.
• Disconnect the MAF sensor from the air intake.
• Spray the MAF cleaner onto the sensor wires, avoiding contact with other components.
• Allow it to dry completely before reconnecting. If damaged, replace with a new MAF sensor.

5. Inspect Fuel Injectors

• Tools Required: Injector cleaning kit, multimeter.
• Remove the fuel rail to access injectors.
• Use a multimeter to test the resistance of each injector; replace any faulty injectors.
• Clean the injectors using an injector cleaning kit if they seem clogged.

6. Check and Clean PCV System

• Tools Required: Socket set, cleaner.
• Locate the PCV valve and remove it for inspection.
• Check for blockages and clean or replace the valve as necessary.