how to fix P0171 code on my Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect the air intake hoses for any signs of wear or damage.
  • Tighten any loose connections and replace any damaged hoses.
  • Use a smoke machine to detect hidden vacuum leaks if necessary.

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Remove the MAF sensor from the intake duct.
  • Clean the MAF sensor using MAF cleaner spray and a soft brush if dirty.
  • If the MAF sensor is damaged, replace it with a new one and reconnect it.

4. Check Fuel Pressure

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the ON position (without starting the engine) to check the fuel pressure reading.
  • Compare the reading with manufacturer specifications; replace the fuel pump or fuel filter if pressure is low.

5. Inspect and Clean Fuel Injectors

• Sub-steps:
  • Remove the fuel injectors from the fuel rail.
  • Clean the injectors using a specialized injector cleaning kit or replace them if they are clogged or damaged.
  • Reinstall the injectors and ensure they are properly seated.

6. Reassemble and Test

• Sub-steps:
  • Reconnect any components removed during the inspection and repair process.
  • Reconnect the battery.
  • Start the engine and allow it to idle to check for any issues or warning lights.