how to fix P0174 code in Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, fuel pressure gauge, MAF sensor cleaner, socket set, torque wrench, vacuum gauge.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect and Repair Air Intake System

• Sub-step 1: Check all hoses connected to the air intake for signs of cracks or disconnections. Replace any damaged hoses.
• Sub-step 2: Inspect the intake manifold gasket for leaks. If damaged, replace the gasket.
• Tools Required: Socket set, torque wrench.
• Safety Warning: Disconnect the battery before working on electrical components.

3. Test and Clean MAF Sensor

• Sub-step 1: Disconnect the MAF sensor connector and remove the sensor from the air intake.
• Sub-step 2: Clean the MAF sensor using MAF cleaner. Allow it to dry completely before reinstallation.
• Sub-step 3: Reinstall the MAF sensor and reconnect the electrical connector.
• Tools Required: MAF cleaner, screwdriver.

4. Check Fuel Pressure

• Sub-step 1: Connect the fuel pressure gauge to the fuel rail. Ensure the ignition is in the "On" position without starting the engine to check pressure.
• Sub-step 2: Compare the reading to manufacturer specifications. If low, inspect the fuel pump, fuel filter, and fuel lines, replacing any faulty components.
• Tools Required: Fuel pressure gauge.

5. Inspect Vacuum System

• Sub-step 1: Use a vacuum gauge to test for leaks in the vacuum system. A steady reading indicates no leaks.
• Sub-step 2: If any leaks are found, replace the affected hoses or components.
• Tools Required: Vacuum gauge.