my Renault Clio V (2019-Present) has a check engine light with code P0171, what does it mean?

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the battery to prevent electrical shock.
• Ensure the vehicle is on a flat surface and securely elevated if necessary.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, torque wrench
• Inspect all connections in the air intake duct for tightness and integrity.
• Tighten or replace any loose or damaged hoses.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, soft cloth
• Remove the MAF sensor from the air intake system.
• Use MAF cleaner to clean the sensor gently.
• Allow it to dry before reinstalling, or replace it if damaged.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, wrench set
• Connect the fuel pressure gauge to the fuel rail to check for adequate fuel pressure (consult vehicle specifications for correct values).
• If pressure is low, inspect the fuel filter for clogs and replace if necessary.
• Check the fuel pump operation and replace if faulty.

5. Inspect Vacuum Lines

• Tools Required: Visual inspection tools
• Trace all vacuum lines from the intake manifold, looking for cracks or disconnections.
• Replace any damaged vacuum lines.

6. Reassemble and Test

• Reattach all components after repairs.
• Reconnect the battery and start the engine.
• Monitor the engine for any new codes or symptoms.