how to fix P0174 code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

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

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, screwdrivers.
• Visually inspect all vacuum hoses connected to the intake manifold and replace any damaged hoses.
• Use a vacuum gauge to check for leaks; if any leaks are found, repair or replace the affected components.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver.
• Detach the MAF sensor from the air intake duct.
• Spray the MAF sensor with MAF cleaner and let it dry completely before reinstalling.
• If the sensor is damaged, replace it with a new one.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, socket set.
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition on (do not start the engine) and check the fuel pressure; it should meet manufacturer specifications (usually around 40-50 psi).
• If the pressure is low, inspect the fuel pump and fuel filter for faults and replace as necessary.

5. Inspect Fuel Injectors

• Tools Required: Injector cleaning kit or replacement injectors.
• Remove the fuel rail to access the fuel injectors.
• Check for clogs or leaks; if necessary, clean the injectors with a cleaning kit or replace them if they are malfunctioning.

6. Reconnect and Reset

• Reconnect all components and ensure everything is securely fastened.
• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code from the ECM.