how to fix P0174 code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Remove the engine cover if necessary.
  • Inspect the intake manifold and vacuum hoses for cracks or loose connections.
  • Replace any damaged hoses or gaskets.
  • Reassemble and ensure all connections are tight.

3. Test and Clean Mass Airflow Sensor (MAF)

• Sub-steps:
  • Locate the MAF sensor in the air intake duct.
  • Disconnect the electrical connector and unscrew the sensor from its housing.
  • Spray MAF cleaner on the sensor element and allow it to dry completely.
  • Reinstall the MAF sensor and reconnect the electrical connector.

4. Fuel System Inspection

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition key to the "ON" position (do not start) to check fuel pressure.
  • If the pressure is below specifications, check the fuel pump and filter for issues.
  • Replace the fuel filter if clogged and the fuel pump if it fails to deliver adequate pressure.

5. Fuel Injector Inspection

• Sub-steps:
  • Remove the fuel rail to access the fuel injectors.
  • Inspect each injector for clogs and clean them if necessary using a fuel injector cleaning kit.
  • Replace any malfunctioning injectors.