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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the engine to cool if it has been running.

2. Inspect and Repair Air Intake System

• Remove the air intake duct from the throttle body.
• Inspect for cracks or loose connections; replace any damaged components.
• Reconnect the air duct securely.

3. Clean MAF Sensor

• Locate the MAF sensor within the air intake system.
• Use a specialized MAF sensor cleaner to spray the sensor gently.
• Allow it to dry completely before reinstallation.

4. Check Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Compare the reading with the manufacturer's specifications.
• If low, check the fuel pump and filter; replace as needed.

5. Inspect and Clean Fuel Injectors

• Remove the fuel injectors from the fuel rail.
• Use an injector cleaning kit to clean the injectors thoroughly.
• Reinstall the injectors and ensure they are seated properly.

6. Check for Vacuum Leaks

• Visually inspect all vacuum hoses and gaskets for signs of wear or damage.
• Use a smoke machine or carburetor cleaner to test for leaks at various vacuum connections.
• Replace any defective hoses or gaskets.

7. Test Oxygen Sensor

• Disconnect the oxygen sensor connector.
• Use a multimeter to check the sensor's voltage output.
• If the output is outside of specifications, replace the oxygen sensor.