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

Solution

1. Preparation

• Gather tools and parts before starting the repair.
• Disconnect the battery to prevent electrical shorts.
• Ensure the engine is cool before working.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdrivers, pliers, flashlight
• Inspect all intake hoses and connections for cracks or loose fittings.
• Tighten any loose clamps or replace damaged hoses.
• If necessary, replace the intake manifold gasket if it shows signs of wear or damage.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, Torx screwdriver
• Remove the MAF sensor from the air intake system.
• Clean the sensor with MAF cleaner, following the manufacturer's instructions.
• If the sensor is damaged, replace it with a new one and re-install.

4. Test and Repair Fuel System

• Tools Required: Fuel pressure gauge, multimeter
• Connect a fuel pressure gauge to the fuel rail to check for proper fuel pressure.
• If pressure is low, inspect the fuel pump and filter for blockages or failure.
• Replace the fuel filter if it is clogged and ensure the fuel pump is functioning correctly.

5. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket
• Check the pre-cat oxygen sensor for proper readings using a multimeter.
• If the sensor is out of range or faulty, replace it with a new unit.
• Reconnect all electrical connectors securely.