how to fix the P0171 code on my Renault Clio V (2019-Present)?

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool before beginning any work.

2. Inspect and Repair Intake System

• Sub-steps:

  1. Visually inspect all hoses and connections in the air intake system for cracks or disconnections.
  2. Replace any damaged or leaking hoses with new ones.
  3. Clean the throttle body and check the throttle position sensor.

• Tools Required:

  • Screwdriver set
  • Hose clamp pliers
  • Throttle body cleaner

3. Test and Replace Fuel Components

• Sub-steps:

  1. Connect a fuel pressure gauge to the fuel rail and verify that the pressure is within specified limits.
  2. If the pressure is low, replace the fuel pump or fuel filter as necessary.
  3. If the pressure is acceptable, proceed to check the fuel injectors for clogs or malfunctions.
  4. Clean or replace any faulty fuel injectors.

• Tools Required:

  • Fuel pressure gauge
  • Injector cleaning kit (if needed)

4. Check and Clean MAF Sensor

• Sub-steps:

  1. Remove the MAF sensor from the air intake duct.
  2. Clean the MAF sensor using MAF cleaner.
  3. Reinstall the MAF sensor securely.

• Tools Required:

  • MAF sensor cleaner
  • Torx screwdriver

5. Inspect Oxygen Sensors

• Sub-steps:

  1. Locate and inspect the upstream oxygen sensor wiring for damage or corrosion.
  2. Test the sensor's resistance using a multimeter, replacing it if it shows signs of failure.
  3. Reconnect any loose connections.

• Tools Required:

  • Multimeter
  • O2 sensor socket