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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent any electrical shorts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.

2. Inspect and Repair the Air Intake System

• Tools Required: Socket set, screwdrivers.
• Remove the engine cover (if applicable) to access the air intake system.
• Check all air intake hoses for cracks or loose connections; replace any damaged hoses.
• Inspect the intake manifold for leaks and tighten any loose bolts to manufacturer specifications.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver.
• Disconnect the MAF sensor connector.
• Remove the MAF sensor from the air intake duct.
• If dirty, spray MAF sensor cleaner on the sensor elements; do not touch them.
• If damaged, replace the MAF sensor with a new one.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, socket set.
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition on (do not start the engine) and check fuel pressure against manufacturer specifications (typically 3-4 bar).
• If pressure is low, inspect the fuel pump and filter for clogs or malfunctions, and replace them if necessary.

5. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps.
• Start the engine and use a vacuum gauge to check for correct vacuum levels.
• Listen for any hissing sounds indicating a vacuum leak; check all vacuum lines.
• Replace any damaged vacuum hoses and ensure all connections are secure.