how to fix P0174 code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge
• Remove the engine cover (if applicable) using a socket set.
• Inspect the air intake ducting and associated hoses for any visible cracks or leaks.
• Tighten or replace any loose or damaged components. Replace cracked hoses with new ones.
• Reinstall any removed components and the engine cover.

3. Fuel Pressure Check

• Tools Required: Fuel pressure gauge
• Locate the fuel pressure test port on the fuel rail.
• Connect the fuel pressure gauge to the test port.
• Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading. Compare it to the manufacturer specifications (typically around 40-50 psi for Honda).
• If the pressure is low, inspect the fuel pump and fuel filter for issues. Replace if necessary.
• Disconnect the gauge and reattach the test port cap.

4. MAF Sensor Cleaning or Replacement

• Tools Required: MAF sensor cleaner or electrical cleaner
• Locate the MAF sensor in the air intake system.
• Disconnect the electrical connector carefully.
• Remove the MAF sensor using a screwdriver.
• Spray the MAF sensor with the cleaner and allow it to dry completely before reinstalling.
• If the sensor is damaged, replace it with a new one.

5. Inspect Fuel Injectors

• Tools Required: Multimeter (for electrical check), fuel injector cleaner
• Remove the fuel rail and inspect the injectors for any signs of clogging or leaks.
• Test the injectors with a multimeter to ensure they are receiving the correct voltage.
• If injectors are clogged, use a fuel injector cleaning kit or replace them if necessary.
• Reinstall the fuel rail and ensure all connections are secure.