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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface with the engine off and cool.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Clean MAF Sensor

• Carefully remove the MAF sensor from the air intake housing.
• Use MAF sensor cleaner to spray the sensor elements and allow them to dry completely.
• Reinstall the MAF sensor, ensuring it is securely connected.

3. Check and Repair Vacuum Leaks

• Visually inspect all vacuum lines for cracks or disconnections.
• Replace any damaged vacuum hoses with new ones, ensuring a snug fit.
• Recheck all connections around the intake manifold and throttle body.

4. Fuel System Inspection

• Connect a fuel pressure gauge to the fuel rail.
• Start the engine and monitor the fuel pressure; it should match the manufacturer specifications (typically 40-50 psi).
• If the pressure is low, check the fuel pump and fuel filter for issues.
• Clean or replace clogged fuel injectors as necessary.

5. Clear Error Codes

• Once repairs are completed, reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code from the vehicle's computer.