how to fix P0174 code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Clean MAF Sensor

• Tools Required: Torx screwdriver, MAF sensor cleaner
• Remove the MAF sensor from the air intake duct.
• Spray the MAF sensor with MAF sensor cleaner, avoiding contact with the sensor wire.
• Allow it to dry completely before reinstalling.

3. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps
• Visually inspect all vacuum lines for signs of wear or damage.
• Use a vacuum gauge to test the intake manifold for leaks.
• Replace any damaged lines or tighten loose connections.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the 'ON' position (without starting the engine) and check the pressure reading.
• If the pressure is below specifications, inspect the fuel pump and filter for issues. Replace if necessary.

5. Clear Codes and Test Drive

• Reconnect the battery and use an OBD-II scanner to clear the P0174 code.
• Start the engine and allow it to reach operating temperature.
• Take the vehicle for a test drive to ensure proper operation and monitor for the check engine light.