how to fix P0174 code in Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and securely lifted if necessary.

2. Inspect and Repair Air Intake System

• Tools Required: Hose clamps, screwdriver, flashlight.
• Instructions:
  1. Visually inspect the air intake tube for cracks or loose fittings.
  2. Tighten any loose clamps or replace damaged hoses.
  3. If any leaks are found, replace the affected components.

3. Test and Replace Fuel Pressure Regulator

• Tools Required: Fuel pressure gauge, socket set, rags for spills.
• Instructions:
  1. Connect a fuel pressure gauge to the fuel rail test port.
  2. Turn the ignition to the ON position (do not start) and observe the pressure reading.
  3. If the pressure is below specifications, replace the fuel pressure regulator.
  4. Disconnect the fuel line and remove the regulator using the socket set.
  5. Install the new regulator and reconnect the fuel line.

4. Clean or Replace Mass Airflow Sensor

• Tools Required: MAF sensor cleaner, screwdriver.
• Instructions:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor from the duct.
  3. Spray the sensor with MAF cleaner and allow it to dry.
  4. Reinstall the sensor and reconnect the electrical connector.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaning kit, fuel injector removal tool.
• Instructions:
  1. Disconnect the fuel lines and electrical connectors from the fuel injectors.
  2. Remove the injectors using the fuel injector removal tool.
  3. Clean the injectors using the injector cleaning kit or replace with new ones if necessary.
  4. Reinstall the injectors and reconnect all connections.