my Toyota RAV4 XA50 (2019-2024) shows P0174 code what does that mean

Solution

1. Preparation

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

2. Inspect and Replace Air Filter

• Remove the air intake duct to access the air filter.
• Inspect the air filter for dirt and debris.
• If dirty, replace it with a new filter.
• Reassemble the air intake duct securely.

3. Check Fuel Pressure

• Locate the fuel pressure test port on the fuel rail.
• Connect a fuel pressure gauge to the test port.
• Turn the ignition key to the "ON" position (do not start the engine) and check the reading.
• If the pressure is below specifications, replace the fuel pump.

4. Clean or Replace MAF Sensor

• Disconnect the electrical connector from the MAF sensor.
• Remove the MAF sensor from the air intake system.
• Clean the sensor with MAF sensor cleaner and allow it to dry completely.
• If cleaning does not resolve the issue, replace the MAF sensor.

5. Inspect and Replace Vacuum Hoses

• Visually inspect all vacuum hoses for cracks or wear.
• Replace any damaged hoses with new ones.
• Ensure all connections are tight and secure.

6. Reconnect Battery and Clear Codes

• Reconnect the battery terminals.
• Use an OBD-II scanner to clear the P0174 code.
• Start the engine and allow it to idle; monitor for any new codes.