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

Solution

1. Preparation

• Gather necessary tools and parts. Disconnect the battery to ensure safety.
• Tools Required: OBD-II scanner, multimeter, fuel pressure gauge, socket set, torque wrench, MAF sensor cleaner.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect all air intake hoses and clamps for cracks or loose connections.
  2. Replace any damaged hoses or clamps.
  3. Ensure the intake manifold is securely bolted and not leaking.

3. Check and Clean MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor using a socket set.
  3. Clean the MAF sensor with MAF cleaner and allow it to dry.
  4. Reinstall the sensor and reconnect the electrical connector.

4. Test and Repair Fuel System

• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail test port.
  2. Turn the ignition key to the "On" position (do not start) and record the fuel pressure reading.
  3. If the pressure is below the manufacturer's specifications, inspect the fuel pump and filter; replace as necessary.
  4. Check the fuel injectors for proper operation and clean or replace if clogged.

5. Inspect Oxygen Sensors

• Sub-steps:
  1. Locate the upstream and downstream oxygen sensors.
  2. Use a multimeter to test the sensors' voltage output according to specifications.
  3. Replace any faulty sensors and ensure the wiring is intact.