how to fix P0174 lean bank 2 code in Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical short circuits.
• Ensure the engine is cool before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver, pliers
• Check for any visible cracks or loose connections in the air intake hoses and replace any damaged components.
• Tighten any loose clamps that secure the air intake system to prevent leaks.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner
• Remove the MAF sensor from the air intake.
• Spray the MAF sensor with MAF cleaner and allow it to dry completely.
• Reinstall the MAF sensor, ensuring all connections are secure.

4. Inspect and Repair Fuel System

• Tools Required: Fuel pressure gauge, socket set
• Connect the fuel pressure gauge to the fuel rail and turn the ignition on (do not start the engine) to check the pressure.
• If the pressure is below specifications, check the fuel pump and filter for blockage or failure and replace as necessary.
• If injectors are faulty, replace them with OEM parts.

5. Check Vacuum Lines

• Tools Required: Inspection mirror, flashlight
• Visually inspect all vacuum lines for cracks or disconnections.
• Replace any damaged lines and ensure all connections are tight.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to clear the P0174 code and perform a test drive to verify proper operation.