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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to avoid electrical shorts.
• Ensure the engine is cool to prevent burns.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, screwdriver.
• Check all vacuum lines for cracks or disconnections.
• Replace any damaged vacuum hoses.
• Tighten or replace hose clamps as necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver.
• Remove the MAF sensor from the air intake duct.
• Spray MAF sensor cleaner on the sensor elements and allow it to dry completely.
• Reinstall the MAF sensor securely.

4. Inspect Fuel System

• Tools Required: Fuel pressure gauge, wrench set.
• Connect the fuel pressure gauge to the fuel rail test port.
• Turn the ignition to the ON position (do not start the engine) and check the pressure.
• If pressure is low, check the fuel pump, filter, and relay.
• Replace any faulty components.

5. Inspect Intake Manifold and Gaskets

• Tools Required: Socket set, gasket scraper, new intake gaskets.
• Remove the intake manifold from the engine.
• Inspect the gaskets for wear or damage. Replace them if necessary.
• Clean the mating surfaces of the manifold and cylinder head.
• Reinstall the intake manifold, ensuring proper torque specifications are followed.

6. Verify Oxygen Sensor Functionality

• Tools Required: OBD-II scanner, multimeter.
• Use the OBD-II scanner to monitor the oxygen sensor readings while the engine is running.
• If readings are out of range, replace the faulty oxygen sensor.