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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, clamps, flashlight
• Steps:
  1. Visually inspect the air intake hoses for cracks, leaks, or loose connections.
  2. Tighten any loose clamps or connections.
  3. Replace any damaged hoses using new OEM parts if necessary.

3. Fuel Pressure Check

• Tools Required: Fuel pressure gauge
• Steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Connect the fuel pressure gauge to the test port.
  3. Turn the ignition to the "ON" position without starting the engine and note the pressure reading.
  4. Compare the reading with the manufacturer's specifications (typically around 3-4 bar for the Clio).
  5. If pressure is low, inspect and replace the fuel pump or fuel filter as needed.

4. MAF Sensor Cleaning/Replacement

• Tools Required: MAF sensor cleaner, screwdriver
• Steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the air intake duct.
  3. Clean the MAF sensor using a dedicated MAF cleaner. Do not touch the sensor element.
  4. Allow it to dry completely before reinstalling.
  5. If cleaning does not resolve the issue, replace the MAF sensor with an OEM part.

5. Inspect Fuel Injectors

• Tools Required: Socket set, fuel injector cleaner
• Steps:
  1. Remove the fuel injector connectors and fuel rail bolts.
  2. Carefully pull out the fuel injectors.
  3. Inspect the injectors for dirt and clogs; clean them using a fuel injector cleaner or replace them if necessary.