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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery's negative terminal to ensure safety.
• Gather necessary safety gear (gloves, goggles).

2. Inspect and Repair Air Intake System

• Sub-step 1: Visually inspect the air intake system from the air filter to the throttle body for any signs of damage or loose fittings.
• Sub-step 2: Tighten or replace any loose or damaged clamps and hoses.
• Tools Required: Flathead screwdriver or pliers.

3. Clean or Replace MAF Sensor

• Sub-step 1: Remove the MAF sensor by disconnecting the electrical connector and unscrewing it from the air intake duct.
• Sub-step 2: Clean the MAF sensor with MAF cleaner (do not use other cleaners) and allow it to dry.
• Sub-step 3: If cleaning does not resolve the issue, replace the MAF sensor with a new one.
• Tools Required: Torx or Phillips screwdriver, MAF cleaner.

4. Inspect and Repair Fuel System

• Sub-step 1: Check fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications (usually around 40-60 psi).
• Sub-step 2: If fuel pressure is low, inspect the fuel pump and replace if necessary.
• Sub-step 3: Inspect and clean fuel injectors if they are clogged.
• Tools Required: Fuel pressure gauge, injector cleaning kit.

5. Inspect Vacuum Hoses

• Sub-step 1: Visually check all vacuum hoses for cracks or disconnections.
• Sub-step 2: Replace any damaged hoses to ensure a tight seal.
• Tools Required: Pliers and replacement vacuum hoses.