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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect Vacuum Lines

• Examine all vacuum hoses connected to the intake manifold and surrounding areas.
• Replace any cracked or disconnected hoses.

3. Clean or Replace MAF Sensor

• Remove the MAF sensor from the intake.
• Use MAF sensor cleaner to clean the sensor elements. Do not use other cleaners.
• Reinstall the MAF sensor securely.

4. Check Fuel System

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition on (do not start the engine) and check for proper fuel pressure (refer to manufacturer specifications).
• Replace the fuel filter if pressure is low or if it is clogged.

5. Inspect Exhaust System

• Visually inspect the exhaust system for any cracks or holes, especially around bank 2.
• Use exhaust sealant to repair minor leaks or replace sections of exhaust if necessary.

6. Examine Intake Manifold Gasket

• Remove the intake manifold (if necessary) to inspect the gasket.
• Replace the intake manifold gasket if it shows signs of wear or damage.