how to fix P0174 code in Toyota Camry Seventh Generation (2012-2017)?

Solution

1. Preparation

• Gather all tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety while working on the vehicle.

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Remove the air intake duct and inspect for cracks or loose connections.
  • Check all vacuum hoses connected to the intake manifold for leaks; replace any damaged hoses.
  • Reinstall the air intake duct securely.

3. Clean or Replace MAF Sensor

• Sub-steps:
  • If the MAF sensor is dirty, use MAF cleaner to spray the sensor element gently.
  • If it's damaged, remove it by unscrewing its mounts and disconnecting the wiring harness.
  • Install a new MAF sensor if necessary, ensuring it is securely fastened and connected.

4. Inspect Fuel Delivery System

• Sub-steps:
  • Check the fuel filter for clogs and replace if necessary.
  • Inspect the fuel pump operation; if not functioning, replace the fuel pump with a new one.
  • Clean or replace any clogged fuel injectors.

5. Verify and Replace Oxygen Sensors (if needed)

• Sub-steps:
  • Use a multimeter to test the oxygen sensors for proper voltage.
  • If a sensor is faulty, unscrew it from the exhaust manifold and replace it with a new sensor.
  • Make sure to reconnect all wiring properly.