how to fix the P0174 code in my Honda Civic 10th Generation (2016-2021)?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before beginning work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge
• Inspect the air intake hoses for cracks or loose fittings.
• Tighten or replace any loose or damaged hoses.
• Check the intake manifold gasket for leaks and replace if necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner
• Locate the MAF sensor in the air intake duct.
• Disconnect the electrical connector and remove the sensor.
• Spray the sensor with MAF cleaner and let it dry completely before reinstalling.
• Reconnect the sensor and the electrical connector.

4. Test Fuel System

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition on (without starting) and check the fuel pressure reading against the manufacturer's specifications.
• If the pressure is low, check the fuel pump and fuel filter for issues.
• Replace any faulty components as needed.

5. Inspect Vacuum Hoses

• Visually inspect all vacuum hoses connected to the intake manifold.
• Replace any cracked or disconnected hoses to ensure proper vacuum levels.