how to fix P0174 code on my Toyota Tacoma N300 (2016-Present)?

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge.
• Remove the air intake duct from the throttle body.
• Inspect for cracks or loose connections; replace hoses as needed.
• Reattach the duct securely and ensure all clamps are tight.

3. Check and Clean MAF Sensor

• Tools Required: MAF sensor cleaner.
• Locate the MAF sensor in the air intake path.
• Disconnect the electrical connector and remove the sensor.
• Spray the sensor with MAF cleaner and allow it to dry completely.
• Reinstall the sensor and reconnect the electrical connector.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Locate the fuel rail and attach the fuel pressure gauge.
• Turn the ignition key to the "On" position (do not start the engine) and check the fuel pressure reading.
• If the pressure is below specification (consult repair manual for specific values), inspect the fuel pump and filter for issues.

5. Inspect Vacuum Lines

• Visually inspect all vacuum lines connected to the intake manifold.
• Replace any cracked or damaged lines as necessary.
• Ensure all connections are secure.

6. Inspect Fuel Injectors

• Tools Required: Multimeter.
• Remove the fuel rail to access the injectors.
• Use a multimeter to check the resistance of each injector (refer to specifications).
• Replace any faulty injectors and reassemble.