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

Solution

1. Preparation

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

2. Inspect and Repair the Air Intake System

• Tools Required: Screwdriver set, pliers
• Remove the air intake duct and inspect for cracks or disconnections.
• Replace any damaged hoses or clamps.
• Ensure the air filter is clean and replace it if dirty.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner or isopropyl alcohol, soft cloth
• Locate the MAF sensor in the air intake path.
• Disconnect the electrical connector and remove the MAF sensor.
• Clean the sensor with MAF cleaner, avoiding contact with sensitive components.
• Reinstall the sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition key to the "ON" position (do not start) to check the pressure.
• Compare the reading to manufacturer specifications; if low, check fuel pump and filter.

5. Inspect Oxygen Sensors

• Tools Required: Socket set
• Locate bank 2 oxygen sensor (usually near the catalytic converter).
• Inspect wiring and connectors for damage or corrosion.
• Replace the sensor if it shows signs of failure.

6. Test and Replace Vacuum Lines if Necessary

• Inspect all visible vacuum lines for cracks or disconnections.
• Replace any damaged vacuum hoses to restore proper air-fuel mixture.