how to fix my Renault Clio V (2019-Present) when the check engine light is on?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to ensure safety during repairs.
• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench.

2. Address Error Codes

• Based on the retrieved error codes, focus on the specific issue.
  • Example: If P0420 (Catalytic Converter Efficiency Below Threshold) is indicated, check the catalytic converter and oxygen sensors.
• Inspect the relevant components for wear, damage, or disconnection.

3. Replace Faulty Components

• If any component (e.g., spark plugs, oxygen sensor, fuel injectors) is determined to be faulty:
  • Remove the old component using appropriate sockets.
  • Install the new component, ensuring it is properly seated.
  • Torque any bolts to manufacturer specifications.

4. Clear Error Codes

• Reconnect the vehicle battery.
• Use the OBD-II scanner to clear the error codes from the system.
• Tools Required: OBD-II scanner.

5. Final Checks

• Start the engine and monitor for any unusual noises or warning lights.
• Allow the engine to reach operating temperature and observe idle stability.