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

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge
• Inspect the air filter and replace it if dirty.
• Check the air intake duct for any cracks or loose connections; repair or replace as necessary.
• Reattach all clamps and ensure a secure fit.

3. Fuel System Inspection

• Tools Required: Fuel pressure gauge, safety glasses, rags
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition key to the "ON" position without starting the engine and check the pressure reading. It should be within the manufacturer's specifications.
• If pressure is low, inspect the fuel pump and filter; replace if faulty.

4. MAF Sensor Cleaning or Replacement

• Tools Required: MAF sensor cleaner, screwdriver
• Locate the MAF sensor in the air intake system.
• Disconnect the electrical connector and remove the sensor from its housing.
• Clean the sensor using MAF sensor cleaner; do not touch the sensor element.
• If cleaning does not resolve the issue, replace the MAF sensor with a new one.

5. Vacuum Leak Inspection

• Tools Required: Smoke machine or carburetor cleaner
• Use a smoke machine or spray carburetor cleaner around vacuum lines and intake manifold gaskets while the engine is idling.
• Look for changes in idle speed, which indicates a vacuum leak.
• Repair or replace any faulty hoses or gaskets discovered during inspection.

6. Fuel Injector Service

• Tools Required: Fuel injector cleaning kit
• Remove the fuel injectors from the fuel rail.
• Clean the injectors using a fuel injector cleaning kit following the manufacturer's instructions.
• Reinstall the injectors ensuring proper sealing and connection.