my Honda Pilot YF3 (2016-2022) has a check engine light and P0174 code what should I do

Solution

1. Preparation

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

2. Inspect and Repair Vacuum Leaks

• Tools Required: Hose clamps, vacuum gauge, spray bottle with soapy water.
• Use a vacuum gauge to check for leaks in vacuum lines.
• Spray soapy water on suspected areas while the engine is running to identify leaks (bubbles will form).
• Replace any damaged hoses or gaskets found during inspection.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, torx screwdriver.
• Remove the MAF sensor by unscrewing the retaining screws.
• Spray the MAF sensor with MAF cleaner and let it dry completely.
• Reinstall the sensor ensuring it is properly seated.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Locate the fuel rail and connect the fuel pressure gauge to the test port.
• Start the engine and check the pressure reading against manufacturer specifications (typically around 40-50 psi).
• If pressure is low, inspect the fuel pump and filter for replacement.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaning kit, multimeter (if testing electrical function).
• Remove the fuel injectors from the fuel rail.
• Clean the injectors using a fuel injector cleaning kit.
• Test the injectors for electrical resistance to ensure they are functioning properly (typically 12-16 ohms).

6. Replace Air Filter

• Tools Required: None.
• Open the air filter housing and remove the old air filter.
• Install a new, clean air filter ensuring it is sealed properly in the housing.