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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to avoid electrical issues during repairs.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Screwdriver set, vacuum gauge
• Sub-steps:
  1. Visually inspect all vacuum hoses and connections for cracks or disconnections.
  2. Use a vacuum gauge to check the vacuum levels; a significant drop can indicate a leak.
  3. Replace any damaged hoses or gaskets as needed.

3. Clean or Replace the MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor from the duct.
  3. Clean the sensor using MAF sensor cleaner and let it dry completely.
  4. Reinstall the sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail service port.
  2. Turn the ignition key to the "On" position without starting the engine to allow the fuel pump to prime.
  3. Observe the fuel pressure readings; refer to the manufacturer's specifications for acceptable ranges.
  4. If pressure is low, inspect the fuel pump and filter for issues and replace as necessary.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaner or replacement injectors
• Sub-steps:
  1. Remove the fuel rail to gain access to the injectors.
  2. Inspect each injector for signs of clogging or leakage.
  3. Clean the injectors using a cleaning kit, or replace them if necessary.
  4. Reinstall the fuel rail and ensure all connections are secure.