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.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the mounting bolts.
• Extract the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one that meets OEM specifications (typically NGK or Bosch).

3. Check and Replace Ignition Coil

• Visually inspect the ignition coil for cracks or damage.
• If the ignition coil is faulty, remove it and replace it with a new one.
• Reinstall the ignition coil and securely connect the electrical connector.

4. Test Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Using a multimeter, check the resistance of the injector; it should typically be within the manufacturer’s specifications.
• If the injector is faulty, remove it by unscrewing the mounting bolts and disconnecting the fuel lines.
• Replace it with a new injector and reconnect all components.

5. Conduct Compression Test

• Remove the spark plug from cylinder 1.
• Insert a compression gauge into the spark plug hole.
• Crank the engine and record the compression reading; it should be within the manufacturer’s specified range.
• If low, further diagnosis for potential head gasket failure or valve issues is required.

6. Final Assembly

• Reinstall the spark plug, ignition coil, and any removed components.
• Reconnect the battery and ensure all connections are secure.