how to resolve P0171 lean condition code on my Renault Clio V (2019-Present)?

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to ensure safety during repairs.
• Raise the vehicle if necessary, using jack stands for access.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect all air intake hoses and connections for signs of wear, cracks, or loose fittings.
  2. Replace any damaged components with OEM parts.
  3. Reconnect all hoses and ensure a tight fit.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the air intake housing.
  3. Clean the sensor using MAF cleaner spray (do not use other cleaners).
  4. If cleaning does not resolve issues, replace the MAF sensor with a new one.
  5. Reinstall the MAF sensor and reconnect the connector.

4. Check Fuel Pressure

• Sub-steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Attach a fuel pressure gauge to the port.
  3. Turn the ignition to the "ON" position (do not start the engine) and check the pressure.
  4. If the pressure is below specifications (refer to service manual), inspect the fuel pump and filter for issues.
  5. Replace the fuel filter or pump if necessary.

5. Inspect Oxygen Sensors

• Sub-steps:
  1. Locate the upstream and downstream oxygen sensors.
  2. Check the wiring and connectors for damage; repair or replace as needed.
  3. Use a multimeter to test the sensor voltages according to specifications.
  4. Replace any faulty oxygen sensors.

6. Verify Fuel Injector Operation

• Sub-steps:
  1. Remove the fuel injector connectors.
  2. Check for continuity with a multimeter.
  3. Perform a visual inspection for leaks; replace any faulty injectors.