how to fix P0174 code on Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

• Gather all tools and parts required for the repair.
• Disconnect the battery to ensure safety while working on the vehicle.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdriver
• Instructions:
  1. Remove the air intake duct from the throttle body.
  2. Inspect all hoses for cracks or loose connections.
  3. Replace any damaged hoses or clamps.
  4. Reinstall the air intake duct securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Instructions:
  1. Disconnect the MAF sensor electrical connector.
  2. Remove the MAF sensor from its housing.
  3. Spray the MAF sensor with MAF cleaner and allow it to dry.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, wrench
• Instructions:
  1. Locate the fuel rail and connect the fuel pressure gauge.
  2. Turn the ignition key to the "ON" position without starting the engine and check the fuel pressure.
  3. If the pressure is below specifications, check the fuel pump and filter for issues.
  4. Replace the fuel filter if clogged and ensure the fuel pump is functioning properly.

5. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket, multimeter
• Instructions:
  1. Locate the oxygen sensors (pre-catalytic converter and post-catalytic converter).
  2. Use the O2 sensor socket to remove the sensors for inspection.
  3. Test the sensors with a multimeter to check for proper voltage output.
  4. Replace any faulty oxygen sensors.

6. Final Checks

• Tools Required: OBD-II scanner
• Instructions:
  1. Clear any trouble codes from the ECM using the OBD-II scanner.
  2. Start the engine and let it idle for a few minutes.
  3. Monitor the engine performance and ensure the check engine light does not reappear.