how to troubleshoot P0301 code on Renault Clio V (2019-Present)

Learn how to troubleshoot 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 needed.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 using a socket set.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage; replace if necessary.
• Install the new spark plug to the specified torque (typically around 20 Nm).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil (if necessary)

• If the spark plug is in good condition, test the ignition coil using a multimeter for resistance.
• If the coil is faulty, remove it and replace it with a new OEM part.
• Ensure proper installation and secure all connections.

4. Inspect and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel injector using the appropriate tools.
• Clean the injector with a specialized cleaner or replace it if it is clogged or damaged.
• Reinstall the injector, ensuring proper sealing and connection.

5. Perform Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• Record the compression value and compare it to manufacturer specifications.
• If compression is low, it may indicate internal engine problems (e.g., valve issues, piston rings).