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 negative battery terminal to ensure safety.
• Allow the engine to cool down before starting any work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector and remove the coil using a socket.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for signs of wear or carbon buildup. Replace it if necessary.
• Install the new spark plug, torquing it to the manufacturer’s specifications (usually around 20 Nm).
• Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Ignition Coil

• Tools Required: Socket set
• If the spark plug is fine, test the ignition coil using a multimeter to check for proper resistance.
• If the coil is faulty, remove it and replace it with a new one.
• Reconnect the ignition coil and ensure it is seated properly.

4. Inspect and Replace Fuel Injector

• Tools Required: Fuel injector removal tool, socket set
• If the ignition components are functional, check the fuel injector operation.
• Disconnect the fuel line and the electrical connector from the injector.
• Remove the fuel injector using the removal tool.
• Inspect the injector for clogs or damage; replace if necessary.
• Install the new injector and reconnect the fuel line and electrical connector.

5. Address Mechanical Issues

• If misfire persists after replacing ignition and fuel components, conduct a compression test.
• If compression is low, further disassembly may be required to inspect the head gasket or valves.