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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a level surface and securely supported.

2. Inspect and Repair Air Intake

• Tools Required: Screwdriver set, pliers, vacuum gauge
• Remove the air intake duct and inspect for cracks or damage.
• Replace any damaged hoses or ducts to ensure a complete seal.

3. Clean the MAF Sensor

• Tools Required: MAF cleaner
• Remove the MAF sensor from the air intake.
• Spray the MAF cleaner onto the sensor elements without touching them.
• Allow the sensor to dry completely before reinstalling.

4. Check Fuel System

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail Schrader valve.
• Turn the ignition key to the "ON" position (do not start the engine) and check if the fuel pressure is within the manufacturer’s specifications (typically 40-50 psi).
• If pressure is low, inspect the fuel pump and filter for clogs or failures.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaning kit, socket set
• Remove the fuel injectors from the rail.
• Use an injector cleaning kit to flush out any deposits and ensure proper spray pattern.
• Reinstall the injectors with new O-rings.

6. Replace Intake Manifold Gasket (if needed)

• Tools Required: Socket set, torque wrench, gasket scraper
• Remove the intake manifold.
• Clean the mating surfaces thoroughly and remove any old gasket material.
• Install a new intake manifold gasket, ensuring proper alignment.
• Reinstall the intake manifold and torque to the manufacturer's specifications.