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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery for safety.
• Ensure the engine is cool before starting repairs.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers.
• Sub-steps:
  1. Visually inspect all air intake hoses for cracks or disconnections.
  2. Tighten any loose connections or replace damaged hoses.
  3. Remove the air filter and inspect for dirt or blockages; replace if necessary.

3. Check and Replace MAF Sensor (if needed)

• Tools Required: MAF cleaner, socket set.
• Sub-steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the intake duct.
  3. Clean the MAF sensor with MAF cleaner and allow it to dry.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Test and Replace Fuel Pump (if pressure is low)

• Tools Required: Fuel pressure gauge, socket set, fuel line disconnect tool.
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition on (do not start the engine) and check the fuel pressure.
  3. If the pressure is below specifications, replace the fuel pump.
  4. Ensure proper installation and reconnect any fuel lines.

5. Inspect and Replace Oxygen Sensor (if necessary)

• Tools Required: O2 sensor socket, wrench.
• Sub-steps:
  1. Locate the upstream oxygen sensor in the exhaust manifold.
  2. Disconnect the electrical connector.
  3. Remove the sensor using an O2 sensor socket.
  4. Install the new sensor, ensuring it is torqued to manufacturer specifications.
  5. Reconnect the electrical connector.