how to fix the P0174 code on my Renault Clio V (2019-Present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the electrical components.

2. Inspect and Clean the MAF Sensor

• Locate the MAF sensor in the air intake system.
• Remove the MAF sensor connector and unscrew the sensor from its housing.
• Use MAF sensor cleaner to spray the sensor elements; do not touch them with fingers.
• Allow the sensor to dry completely before reinstallation.

3. Repair or Replace Vacuum Lines

• Visually inspect all vacuum lines for cracks, breaks, or signs of wear.
• If damaged lines are found, cut the damaged section and replace with new vacuum hose, ensuring a snug fit.
• Reconnect all vacuum lines securely.

4. Check and Repair Fuel System

• Using a fuel pressure gauge, connect it to the fuel rail and turn the ignition to the "ON" position without starting the engine.
• Record the pressure; it should match the manufacturer's specifications (usually between 35-45 psi).
• If pressure is low, inspect the fuel pump, fuel filter, and fuel injectors for blockages or failures.
• Replace any faulty components as necessary.

5. Clear Error Codes

• Reconnect the battery.
• Use an OBD-II scanner to clear the P0174 code from the ECU.
• Start the engine to confirm that the check engine light does not reappear.