how to fix P0302 code in Renault Clio V (2019-Present)?

Learn how to diagnose and fix P0302 cylinder 2 misfire in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to avoid electrical shock.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2.
• Disconnect the electrical connector from the ignition coil.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Inspect the new spark plug to ensure it matches specifications (check gap).
• Install the new spark plug and torque to the manufacturer's specification (typically around 20 Nm).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Test Ignition Coil

• If the spark plug replacement does not resolve the issue, test the ignition coil for cylinder 2 using a multimeter:
  • Disconnect the ignition coil.
  • Measure the resistance across the primary and secondary terminals, ensuring they are within manufacturer specifications.
• If the coil is faulty, replace it with a new unit and reconnect.

4. Inspect and Replace Fuel Injector

• If misfire persists, check the fuel injector for cylinder 2:
  • Remove the fuel rail and disconnect the fuel injector connector.
  • Inspect the injector for clogs or damage.
  • If necessary, replace the fuel injector with a new one, ensuring proper seating and connection.

5. Check for Vacuum Leaks

• Inspect the intake manifold gasket and associated hoses for any signs of wear or leaks.
• Use a smoke machine or carburetor cleaner to identify any vacuum leaks while the engine is running.
• Repair any leaks found as they can cause misfires.