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

Solution

1. Preparation

• Gather the necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect all air intake hoses and connections for cracks or disconnections.
  2. Replace any damaged hoses or clamps.
  3. Ensure the air filter is clean; replace it if necessary.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the air intake tube using a Torx or Phillips screwdriver.
  3. Clean the MAF sensor using MAF cleaner spray; do not touch the sensor element.
  4. Reinstall the MAF sensor and reconnect the electrical connector.
  5. If cleaning does not resolve the issue, replace the MAF sensor with a new one.

4. Check and Adjust Fuel Pressure

• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "On" position (do not start the engine) and check the fuel pressure.
  3. If the pressure is below specifications, inspect the fuel pump and replace if necessary.

5. Inspect and Clean Throttle Body

• Sub-steps:
  1. Remove the intake hose connected to the throttle body.
  2. Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding area.
  3. Reassemble the intake hose securely.

6. Check and Clean Fuel Injectors

• Sub-steps:
  1. Remove the fuel rail with injectors attached.
  2. Inspect injectors for clogs; clean them with a suitable injector cleaner.
  3. Reinstall the fuel rail, ensuring all connections are secure.