what does the P0301 code mean for 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 necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Inspect and Replace Spark Plug

• Remove engine cover if applicable.
• Use a spark plug socket and ratchet to remove the spark plug from cylinder 1.
• Inspect the spark plug for damage or excessive wear.
• Replace with the manufacturer-recommended spark plug (e.g., NGK or Bosch).
• Torque the new spark plug to the specified value (typically around 15-20 Nm).

3. Check and Replace Ignition Coil

• Remove the ignition coil connector and unscrew the coil from cylinder 1.
• Inspect for cracks or damage on the ignition coil.
• If defective, replace it with a new ignition coil (ensure it matches OEM specifications).
• Reinstall the ignition coil and connect the connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel rail (if necessary) to access the fuel injector for cylinder 1.
• Inspect the fuel injector for clogs or leaks.
• Use a fuel injector cleaner or replace the injector if it is malfunctioning.
• Reassemble the fuel rail ensuring proper seals are in place.

5. Perform 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.
• Compare the reading with the manufacturer's specifications (typically around 180-200 psi).
• If compression is low, further mechanical inspection may be required.