how to solve P0174 code on Renault Clio V (2019-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the engine to cool down before starting any work.

2. Inspect and Repair Intake System

• Tools Required: Socket set, vacuum gauge.
  • a. Visually inspect all hoses and connections in the air intake system for cracks or disconnections.
  • b. Use a vacuum gauge to check for leaks in the intake manifold.
  • c. If leaks are found, replace the affected hoses or gaskets.

3. Clean MAF Sensor

• Tools Required: MAF sensor cleaner.
  • a. Locate the MAF sensor in the air intake system.
  • b. Disconnect the electrical connector and remove the sensor from the intake.
  • c. Spray the MAF sensor with MAF cleaner and let it dry completely before reinstalling.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge, socket set.
  • a. Locate the fuel rail and connect the fuel pressure gauge.
  • b. Start the engine and observe the fuel pressure reading. It should meet the manufacturer's specifications (typically around 3-4 bar for most Renault engines).
  • c. If the pressure is low, check the fuel pump and filter for clogs and replace them if necessary.

5. Inspect and Test Fuel Injectors

• Tools Required: Multimeter, injector cleaning kit.
  • a. Remove the fuel injectors from the engine with the proper tools.
  • b. Check the resistance of each injector using a multimeter. Compare the readings to the manufacturer’s specifications.
  • c. Clean the injectors with an injector cleaning kit if they are clogged, or replace them if they are faulty.

6. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket, multimeter.
  • a. Locate the upstream and downstream oxygen sensors.
  • b. Use the O2 sensor socket to remove the sensors.
  • c. Test the sensors with a multimeter to ensure they are functioning correctly. Replace if necessary.