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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, flashlight
• Inspect the air intake hose and connections for any cracks or loose fittings.
• If any damage is found, replace the affected hoses or clamps.

3. Check and Clean 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 and ensure it is properly secured.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
• Attach 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 reading against manufacturer specifications (typically 30-45 PSI).
• If the pressure is low, check the fuel pump and fuel filter for issues.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaning kit, basic hand tools
• Remove the fuel injectors from the fuel rail.
• Use the injector cleaning kit to clean the injectors according to the manufacturer's instructions.
• Reinstall the injectors and ensure proper sealing.

6. Replace ECT Sensor (if faulty)

• Tools Required: Socket set, torque wrench
• Locate the ECT sensor (typically near the thermostat housing).
• Disconnect the electrical connector and remove the sensor using the socket set.
• Install the new ECT sensor and torque it to the manufacturer’s specifications.
• Reconnect the electrical connector.