how to fix P0171 code in Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the battery to ensure safety while working on the electrical components.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, vacuum gauge
• Inspect air intake hoses and connections for any signs of wear or damage.
• If any hoses are cracked or leaking, replace them.
• Reconnect all hoses securely after inspection.

3. Clean or Replace Mass Air Flow (MAF) Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Remove the MAF sensor from the air intake duct.
• Spray the MAF sensor with a specialized MAF cleaner and allow it to dry completely.
• Reinstall the MAF sensor, ensuring it is securely fastened.

4. Test and Replace Fuel Pressure Regulator (if necessary)

• Tools Required: Fuel pressure gauge, wrench set
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (without starting the engine) to check the fuel pressure.
• If the pressure is below the manufacturer's specifications, consider replacing the fuel pump or fuel pressure regulator.
• Disconnect the battery again before proceeding with any replacement.

5. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaner kit, socket set
• Remove fuel injectors from the fuel rail.
• Use a fuel injector cleaning kit to clean each injector thoroughly.
• Check for any signs of damage and replace any faulty injectors.

6. Reconnect Battery and Clear Codes

• Reconnect the battery.
• Use an OBD-II scanner to clear the P0171 code and any other related codes.