how to fix a P0301 code in my 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.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover (if applicable).
• Locate the spark plug for cylinder 1 (usually at the front of the engine).
• Using a spark plug socket, remove the old spark plug.
• Inspect the old spark plug for wear or fouling. Replace if damaged.
• Install the new spark plug, ensuring it is torqued to the manufacturer's specifications (typically around 20 Nm).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil bolt(s) using a socket set.
• Pull the ignition coil out carefully.
• Inspect the coil for cracks or carbon tracking. Replace if faulty.
• Install the new ignition coil and secure it with the bolt(s).

4. Inspect and Clean Fuel Injector

• Disconnect the fuel injector connector.
• Remove the injector by unfastening any retaining clips and pulling it out of the rail.
• Inspect the injector for clogs or damage. Clean or replace if necessary.
• Reinstall the injector, ensuring it seats properly in the rail.

5. Check for Vacuum Leaks

• Inspect all vacuum hoses connected to the intake manifold, looking for cracks or disconnections.
• Replace any damaged hoses.
• Use a smoke tester or carburetor cleaner to check for leaks around the intake manifold gasket.