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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent any electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, flashlight
• Inspect all air intake hoses and connections for cracks or leaks.
• Replace any damaged hoses or connections to ensure a proper seal.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver
• Remove the MAF sensor from the air intake duct.
• Spray the MAF sensor with MAF cleaner, avoiding contact with the sensor elements.
• Allow it to dry and reinstall the sensor. If it appears damaged, replace it with a new one.

4. Check Fuel Delivery System

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position without starting the engine to check the fuel pressure.
• Compare the reading with the manufacturer's specifications. If the pressure is low, check the fuel pump and fuel filter and replace if necessary.

5. Verify Engine Coolant Temperature Sensor

• Tools Required: Multimeter
• Disconnect the ECT sensor connector and check its resistance with a multimeter.
• Compare the readings to specifications in the service manual. Replace the sensor if readings are outside the normal range.

6. Reassemble and Test

• Reconnect the battery.
• Start the engine and monitor for any error codes.
• Allow the engine to reach operating temperature and check for smooth idle and performance.