how to fix P0174 code in Honda Accord 8th Generation (2008-2012)

Solution

1. Preparation

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

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamp pliers
• Instructions:
  1. Use a vacuum gauge to check the engine's vacuum levels.
  2. Visually inspect all vacuum hoses for cracks or disconnections.
  3. Replace any damaged hoses and ensure all connections are secure.

3. Clean or Replace the MAF Sensor

• Tools Required: MAF cleaner, screwdriver
• Instructions:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor using a screwdriver.
  3. Clean the sensor wires with MAF cleaner (do not touch the wires).
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Instructions:
  1. Connect the fuel pressure gauge to the fuel rail service port.
  2. Turn the ignition key to the "On" position (do not start the engine) and check the fuel pressure; it should meet specification (usually around 40-50 psi).
  3. If pressure is low, test the fuel pump and replace the fuel filter if clogged.
  4. If pressure is adequate, move to the next step.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaner, socket set
• Instructions:
  1. Remove the fuel injectors from the fuel rail using the socket set.
  2. Clean the injectors using an injector cleaning solution or have them professionally cleaned.
  3. Reinstall the injectors and reattach the fuel rail.