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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamp pliers
• Instructions:
  1. Use the vacuum gauge to check for proper readings; a reading lower than expected indicates a leak.
  2. Visually inspect all vacuum lines and connections for cracks or disconnections.
  3. Replace any damaged hoses or tighten loose connections.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver
• Instructions:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor from its housing.
  3. Spray MAF sensor cleaner on the element; do not touch it with fingers or tools.
  4. Allow it to dry completely before reinstallation.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, socket set
• Instructions:
  1. Connect the fuel pressure gauge to the fuel rail test port.
  2. Turn the ignition to the “ON” position without starting the engine; check fuel pressure readings.
  3. If fuel pressure is below specifications, replace the fuel pump and/or filter as necessary.

5. Replace Air Filter

• Tools Required: None
• Instructions:
  1. Locate the air filter housing.
  2. Open the housing and remove the old air filter.
  3. Install a new air filter, ensuring it fits securely, then close the housing.