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 tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface, the engine is cool, and the keys are removed from the ignition.
• Disconnect the battery to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the old spark plug using a spark plug socket.
• Install the new spark plug by hand to avoid cross-threading, then tighten to the manufacturer's specified torque (typically around 20 Nm).
• Reattach the ignition coil, ensuring it is securely fastened and the electrical connector is plugged in.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• If the ignition coil is damaged or not functioning, remove it as described above.
• Install the new ignition coil by securing it with bolts and reconnecting the electrical connector.
• Torque the bolts to the manufacturer's specifications.

4. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector puller, socket set, torque wrench.
• Remove the fuel rail to access the fuel injector for cylinder 1.
• Disconnect the fuel line and electrical connector from the injector.
• Remove the old injector and replace it with a new one, ensuring that O-rings are lubricated and correctly positioned.
• Reassemble the fuel rail and reconnect all lines and connectors.

5. Clear Error Codes

• Reconnect the battery and use the OBD-II scanner to clear the P0301 code.
• Start the engine and allow it to reach operating temperature.