how to fix P0174 lean code in Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to prevent any electrical short circuits.

Tools Required:

• OBD-II scanner
• Socket set
• Fuel pressure gauge
• Multimeter
• MAF sensor cleaner
• Torx bit set

2. Inspect and Repair Air Intake System

1. Inspect Hoses:

   • Visually inspect all intake hoses for cracks or signs of wear.
   • Replace any damaged hoses with OEM parts.

2. Check for Leaks:

   • Use a smoke machine or spray soapy water on the hoses to identify leaks.
   • Repair or replace any leaking sections.

3. Clean or Replace MAF Sensor

1. Remove the MAF Sensor:

   • Disconnect the electrical connector from the MAF sensor.
   • Remove the screws holding the MAF sensor in place and take it out.

2. Clean the MAF Sensor:

   • Spray the MAF sensor cleaner onto the sensor elements.
   • Allow it to dry completely before reinstalling.

3. Reinstall the MAF Sensor:

   • Secure the MAF sensor with screws and reconnect the electrical connector.

4. Test Fuel System

1. Check Fuel Pressure:

   • Connect a fuel pressure gauge to the fuel rail.
   • Turn the ignition to the "ON" position (without starting the engine) and check the reading.
   • Compare the reading to manufacturer specifications. Replace the fuel pump if the pressure is low.

2. Inspect Fuel Injectors:

   • If fuel pressure is adequate, remove the fuel injectors for inspection.
   • Clean or replace any clogged or malfunctioning injectors.