how to fix P0301 misfire code on 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 battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket set to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear; replace it if necessary (recommended gap is 0.7-0.8mm).
• Install the new spark plug and torque to manufacturer specifications (typically 20 Nm).

3. Test and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil on cylinder 1.
• Remove the ignition coil using a socket wrench.
• Test the ignition coil using a multimeter (check resistance values as per service manual).
• If faulty, replace with a new ignition coil.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect and Clean or Replace Fuel Injector

• Disconnect the fuel injector connector.
• Remove the fuel injector from cylinder 1 using appropriate tools.
• Inspect the injector for clogs; clean using injector cleaner if necessary.
• If cleaning does not resolve the issue, replace with a new fuel injector.
• Reinstall the fuel injector and reconnect the connector.

5. Perform Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• If compression is low, evaluate for internal engine issues (head gasket, piston rings).
• Address any internal issues as necessary.