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

Solution

1. Preparation

• Tools Required:
  • OBD-II scanner
  • Fuel pressure gauge
  • Multimeter
  • Screwdrivers and socket set
  • MAF sensor cleaner
• Disconnect the battery to ensure safety during repairs.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Visually inspect all air intake hoses and connections for cracks or disconnections.
  3. Replace any damaged hoses or clamps.
  4. Reinstall the engine cover and reconnect the battery.

3. Check and Replace Fuel Filter

• Sub-steps:
  1. Locate the fuel filter (usually along the fuel line).
  2. Use appropriate tools to disconnect the fuel lines from the filter; be cautious of fuel spray.
  3. Remove the old fuel filter from its bracket.
  4. Install the new fuel filter, ensuring flow direction is correct as indicated on the filter.
  5. Reconnect the fuel lines and check for leaks.

4. Clean or Replace MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector.
  3. Remove the MAF sensor using a screwdriver or socket.
  4. If cleaning, spray MAF sensor cleaner onto the sensing element and allow it to dry. If replacing, install a new sensor.
  5. Reconnect the electrical connector and secure the sensor in place.

5. Verify Fuel Injector Functionality

• Sub-steps:
  1. Disconnect the fuel injector connectors.
  2. Using a multimeter, test the resistance of each injector to confirm they are within specifications.
  3. If any injectors are faulty, remove and replace them with new units.
  4. Reconnect the injectors and ensure they are seated properly.