Renault Clio V (2019-Present) P0301 code, what does it mean and how to fix it?

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 prevent electrical shock.
• Allow the engine to cool down before working.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 1.
• Unscrew and remove the spark plug from cylinder 1 using a spark plug socket.
• Inspect the old spark plug; if fouled or damaged, replace it with a new one.
• Torque the new spark plug to the manufacturer's specifications (typically around 20 Nm).
• Reinstall the ignition coil.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• Remove the ignition coil from cylinder 1.
• Test the ignition coil with a multimeter; if it shows out-of-spec resistance, replace it with a new coil.
• Reinstall the new ignition coil ensuring it is seated correctly.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit, safety glasses.
• Disconnect the fuel injector electrical connector and fuel line.
• Remove the fuel injector from cylinder 1.
• Inspect the injector for clogs or leaks; clean it using a fuel injector cleaning kit.
• Reinstall the cleaned or new fuel injector, ensuring proper sealing.

5. Perform Compression Test

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder 1 again for access.
• Insert the compression gauge into the spark plug hole and crank the engine.
• Note the compression reading; if below factory specifications, further engine diagnostics may be required.