what does it mean when my Honda Accord has a P0174 code

Solution

1. Preparation

• Gather necessary tools and parts for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect the air intake hoses for cracks or loose fittings.
  • Use a smoke machine to check for vacuum leaks if necessary.
  • Replace any damaged hoses or fittings.

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Locate the MAF sensor, typically found in the air intake duct.
  • Disconnect the electrical connector and remove the MAF sensor.
  • Clean the MAF sensor with MAF cleaner spray; do not use any other cleaners.
  • If damaged, replace the MAF sensor with a new one.

4. Test and Repair Fuel Delivery System

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position (do not start) and check the fuel pressure; it should be within specifications (refer to the service manual).
  • If pressure is low, inspect the fuel pump and filter for blockages or malfunctions. Replace them if necessary.

5. Inspect Fuel Injectors

• Sub-steps:
  • Remove the fuel rail to access the fuel injectors.
  • Inspect injectors for clogs; clean with injector cleaner or replace if necessary.
  • Reinstall the fuel rail and ensure all connections are secure.