FAULTBASE
Error CodesASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Renault/Clio/V (2019-Present)/how to fix P0171 code in Renault Clio V (2019-Present)

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

Renault Clio V (2019-Present)

Error Codes
Severity: highDifficulty: mediumError Code: P01712-4 hours
4 min read
629 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0171 engine lean condition in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0171
Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on the electrical systems.
  • ⚠Allow the engine to cool before inspecting components to avoid burns.

Symptoms

  • •Check engine light illuminated
  • •Rough idle during engine operation
  • •Loss of power during acceleration
  • •Poor fuel economy
  • •Engine stalling under load
  • •Increased emissions

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm P0171 is present.
  2. 2Inspect the air intake system for any visible leaks or damage, including hoses and connections.
  3. 3Check the Mass Air Flow (MAF) sensor for proper operation and cleanliness.
  4. 4Inspect the fuel system for low fuel pressure, including checking the fuel pump and fuel filter.
  5. 5Examine the engine's vacuum lines for leaks or cracks.
  6. 6Verify the operation of the Oxygen Sensors (O2) to ensure they are providing accurate readings.

Solution

Solution

1. Preparation

  • Gather tools and parts required for the repair.
  • Disconnect the battery to prevent any electrical issues during the repair process.

2. Inspect and Repair Air Intake System

  • Tools Required: Screwdriver set, vacuum gauge, hose clamps
  • Inspect all air intake hoses for cracks or loose connections; replace any damaged hoses.
  • Tighten any loose clamps to ensure a proper seal on the air intake system.

3. Clean or Replace MAF Sensor

  • Tools Required: MAF sensor cleaner, Torx screwdriver
  • Remove the MAF sensor by unscrewing it from its housing.
  • Spray the MAF sensor with MAF cleaner and allow it to dry completely before reinstallation.
  • Reinstall the MAF sensor securely.

4. Check and Repair Fuel System

  • Tools Required: Fuel pressure gauge, socket set
  • Connect the fuel pressure gauge to the fuel rail service port.
  • Turn the ignition key to the "On" position (do not start) and check the pressure; it should match manufacturer specifications (usually around 3-4 bar).
  • If pressure is low, inspect the fuel pump and replace the fuel filter if clogged. Replace the fuel pump if necessary.

5. Inspect Vacuum Lines

  • Tools Required: Visual inspection tools, vacuum gauge
  • Inspect all vacuum lines connected to the intake manifold for cracks or disconnections.
  • Replace any damaged or leaking vacuum lines to restore proper pressure.

6. Verify O2 Sensor Functionality

  • Tools Required: OBD-II scanner, multimeter
  • Use the OBD-II scanner to check the live data from the O2 sensors.
  • If readings are out of range, replace the faulty O2 sensor.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Screwdriver set
  • Vacuum gauge
  • MAF sensor cleaner
  • Socket set
  • Multimeter

Parts Required

  • MAF sensor (if cleaning does not solve the issue)
  • Fuel filter (if clogged)
  • Fuel pump (if low pressure is confirmed)
  • Vacuum lines (if damaged)

Additional Information

Error CodeP0171
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

4 items

Related Faults

  1. why does my Renault Clio V's windshield wipers stop working?

    Learn how to diagnose and fix windshield wipers not working on Renault Clio V. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Electrical5 symptoms
  2. my Renault Clio V's fuel gauge is inaccurate, what can I do?

    Learn how to diagnose and fix an inaccurate fuel gauge in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

    Fuel System5 symptoms
  3. how to fix moisture issues in Renault Clio V (2019-Present) electrical system

    Learn how to diagnose and fix moisture issues in the electrical system of Renault Clio V (2019-Present). Step-by-step guide with tools and tips.

    Electrical5 symptoms
  4. how to fix the door ajar sensor issue in Renault Clio V

    Learn how to diagnose and fix the door ajar sensor issue in Renault Clio V. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Electrical5 symptoms
  5. how to fix the rear view camera not working on my Renault Clio V (2019-Present)?

    Learn how to diagnose and fix the rear view camera not working on Renault Clio V. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

    Electrical5 symptoms
  6. how to diagnose CAN bus communication errors in Renault Clio V (2019-Present)

    Learn how to diagnose and fix CAN bus communication errors in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

    Electrical5 symptoms

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation