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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to avoid electrical shorts.
• Allow the engine to cool down to prevent burns.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge, flashlight
• Sub-steps:
  1. Remove the air intake duct and throttle body cover to access the intake system.
  2. Visually inspect for cracks or leaks in the ducting and hoses.
  3. Replace any damaged hoses or clamps.
  4. Reconnect the air intake components securely.

3. Test and Clean Mass Airflow Sensor (MAF)

• Tools Required: MAF sensor cleaner
• Sub-steps:
  1. Disconnect the electrical connector from the MAF sensor.
  2. Remove the MAF sensor from its housing.
  3. Spray MAF sensor cleaner onto the sensor elements to remove dirt and debris.
  4. Allow the sensor to dry, then reinstall it.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge, service manual
• Sub-steps:
  1. Locate the fuel rail and connect the fuel pressure gauge to the service port.
  2. Turn the ignition on without starting the engine and read the pressure; it should match specifications (usually around 40-50 psi).
  3. If the pressure is low, check the fuel pump operation and replace if necessary.

5. Inspect Fuel Injectors

• Tools Required: Multimeter, injector cleaning kit (if necessary)
• Sub-steps:
  1. Disconnect the electrical connectors from the fuel injectors.
  2. Use a multimeter to check for continuity in each injector.
  3. If any injectors are faulty, replace them.
  4. If they are clogged, use an injector cleaning kit to restore functionality.

6. Final Assembly

• Reinstall any components removed during the inspection and repairs.
• Reconnect the battery.
• Clear the fault codes using an OBD-II scanner.