how to fix P0174 code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Remove the engine cover (if applicable) using a socket set.
  • Inspect all air intake hoses for cracks or loose connections; replace any damaged hoses.
  • Check the intake manifold gasket for leaks and replace if necessary.
• Tools Required: Socket set, screwdriver

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Locate the MAF sensor in the air intake duct.
  • Disconnect the electrical connector from the MAF sensor.
  • Remove the sensor using a Torx or socket wrench.
  • Clean the MAF sensor with MAF cleaner; if heavily damaged, replace it with a new sensor.
• Tools Required: Torx or socket wrench, MAF cleaner

4. Check and Repair Fuel System

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position without starting the engine to check fuel pressure.
  • If the pressure is below specifications (consult repair manual), inspect the fuel pump, fuel filter, and fuel injectors for issues.
  • Replace any faulty components as needed.
• Tools Required: Fuel pressure gauge, socket set

5. Inspect and Replace Oxygen Sensors

• Sub-steps:
  • Use an O2 sensor socket to remove the downstream oxygen sensor from bank 2.
  • Inspect the sensor for carbon buildup or damage. Replace if necessary.
  • Reinstall the new or cleaned sensor and reconnect the electrical connector.
• Tools Required: O2 sensor socket, wrench