how to fix P0174 code in Renault Clio V (2019-Present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, fuel pressure gauge, basic hand tools.
• Ensure the vehicle is parked on a level surface.
• Disconnect the battery before starting work.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Remove the engine cover (if necessary) to access the air intake.
  2. Visually inspect the air intake hoses for any cracks or loose fittings.
  3. Tighten any loose clamps and replace any damaged hoses.
  4. If necessary, replace the air filter.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Disconnect the electrical connector from the MAF sensor.
  2. Remove the MAF sensor using appropriate tools.
  3. Clean the sensor with MAF cleaner or replace it if it is faulty.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition key to the “on” position without starting the engine to check the fuel pressure.
  3. Compare the reading with the specifications in the repair manual.
  4. If the pressure is low, inspect the fuel pump and filter for issues.

5. Inspect Vacuum Lines

• Sub-steps:
  1. Visually inspect all vacuum lines connected to the intake manifold.
  2. Replace any lines that show signs of wear, cracking, or disconnection.
  3. Use a smoke tester to detect any hidden leaks if necessary.

6. Verify Fuel Injector Function

• Sub-steps:
  1. Disconnect the fuel injector connectors.
  2. Use a multimeter to check the resistance of each injector according to specifications.
  3. Reconnect and perform a cleaning procedure if they are clogged, or replace them if defective.