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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and engage the parking brake.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge
• Remove the air intake duct and inspect for cracks or loose connections.
• Replace any damaged hoses or clamps.
• Reinstall the air intake duct securely.

3. Check and Clean MAF Sensor

• Tools Required: MAF cleaner spray
• Disconnect the MAF sensor electrical connector.
• Remove the MAF sensor from the intake.
• Spray the sensor with MAF cleaner and allow it to dry completely.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Fuel System Pressure Test

• Tools Required: Fuel pressure gauge
• Locate the fuel pressure test port on the fuel rail.
• Attach the fuel pressure gauge and turn the ignition key to the ON position without starting the engine.
• Check the fuel pressure reading; it should be within the manufacturer's specifications (usually around 40-50 psi for most Honda models).
• If pressure is low, check fuel pump operation and replace if necessary.

5. Inspect Vacuum Lines

• Visually inspect all vacuum lines for signs of wear, cracking, or disconnection.
• Replace any faulty vacuum lines and ensure all connections are secure.

6. Test and Clean Fuel Injectors

• Tools Required: Fuel injector cleaner, multimeter
• If injectors are faulty, remove them from the fuel rail.
• Clean the injectors using a fuel injector cleaning kit or replace them if necessary.
• Reinstall the injectors and ensure they are properly secured.