how to fix P0301 misfire code in Renault Clio V (2019-Present)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Renault Clio V. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to prevent electrical shorts.
• Ensure the engine is cool before starting repairs.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if necessary to access the spark plug.
• Disconnect the ignition coil connector and remove the coil.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary with equivalent or OEM part.
• Torque the new spark plug to the manufacturer's specifications (typically around 25 Nm).
• Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• If the spark plug is in good condition, inspect the ignition coil for signs of damage or malfunction.
• Remove the ignition coil from cylinder 1 and test it using a multimeter (check primary and secondary resistance).
• If faulty, replace the ignition coil with a compatible part.
• Torque the new coil to specifications and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector

• Tools Required: Fuel injector removal tool, socket set, torque wrench.
• Disconnect the fuel line and electrical connector from the fuel injector on cylinder 1.
• Remove the injector from the fuel rail.
• Inspect the injector for clogs or leaks. If defective, replace the injector with a new one.
• Reinstall the injector, ensuring proper seating and torque to specifications.
• Reconnect the fuel line and electrical connector.

5. Final Checks

• Reconnect the vehicle battery.
• Clear the P0301 code using the OBD-II scanner.
• Start the engine and allow it to idle, monitoring for any irregularities.