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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery.
• Allow the engine to cool before starting work on the intake system.

2. Inspect and Repair Vacuum Leaks

• Sub-steps:
  • Visually inspect all vacuum hoses connected to the intake manifold and throttle body.
  • Use a smoke machine to identify any vacuum leaks.
  • Replace any damaged hoses or gaskets found during inspection.

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Remove the MAF sensor from the air intake duct.
  • Spray MAF cleaner on the sensor elements to remove any dirt or debris.
  • Allow the sensor to dry completely before reinstalling it.
  • If the sensor is faulty, replace it with a new one.

4. Check and Restore Fuel System Pressure

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position (do not start the engine) and check the pressure reading against manufacturer specifications.
  • If pressure is low, inspect the fuel pump, fuel filter, and fuel injectors for clogs or failures.
  • Replace any faulty components.

5. Reassemble and Test

• Sub-steps:
  • Reinstall all components in reverse order of removal.
  • Reconnect the battery terminal.
  • Start the engine and check for any abnormal noises or leaks.