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

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers
  • Sub-steps:
    1. Remove the engine cover if necessary to access the intake system.
    2. Inspect all hoses and connections for cracks or signs of wear.
    3. Replace any damaged hoses and ensure all connections are tight.

3. Clean the Mass Air Flow (MAF) Sensor

• Tools Required: MAF cleaner, soft cloth
  • Sub-steps:
    1. Locate the MAF sensor, usually found between the air filter and throttle body.
    2. Disconnect the electrical connector from the MAF sensor.
    3. Remove the MAF sensor from the air intake housing.
    4. Spray the MAF cleaner on the sensor element and allow it to dry completely before reinstalling.
    5. Reinstall the MAF sensor and reconnect the electrical connector.

4. Inspect Fuel System

• Tools Required: Fuel pressure gauge, socket set
  • Sub-steps:
    1. Connect the fuel pressure gauge to the fuel rail test port.
    2. Turn the ignition to the "ON" position (do not start) and check the fuel pressure reading against the manufacturer specifications.
    3. If the pressure is low, check the fuel pump and filter for issues. Replace if necessary.

5. Check Vacuum Lines

• Tools Required: Visual inspection tools
  • Sub-steps:
    1. Visually inspect all vacuum lines for cracks or disconnections.
    2. Replace any damaged vacuum lines.

6. Clean Throttle Body

• Tools Required: Throttle body cleaner, soft cloth
  • Sub-steps:
    1. Disconnect the throttle body from the intake manifold.
    2. Clean the throttle body using throttle body cleaner and a soft cloth to remove carbon deposits.
    3. Reinstall the throttle body and reconnect any electrical connectors.