my Renault Clio V (2019-Present) has a P0301 code, how do I 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 ensure safety during repair.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Fuel injector cleaning kit (if needed)

2. Inspect and Replace Spark Plug

1. Remove the engine cover (if applicable) to access the ignition components.
2. Disconnect the ignition coil connector for cylinder 1.
3. Unscrew the ignition coil and remove it carefully.
4. Remove the spark plug using a spark plug socket.
5. Inspect the spark plug for wear or damage; replace if necessary.
6. Install a new spark plug, ensuring it is gapped correctly (consult specifications).
7. Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Fuel Injector

1. If the injector is suspected to be faulty, remove the fuel rail.
2. Disconnect the electrical connector from the fuel injector for cylinder 1.
3. Unscrew and remove the injector from the rail.
4. Inspect the injector for clogs or damage; clean or replace as necessary.
5. Reinstall the fuel injector and reconnect the electrical connector.
6. Reinstall the fuel rail, ensuring proper seals are used.

4. Check Cylinder Compression (if necessary)

1. Remove the spark plug from cylinder 1.
2. Insert a compression tester into the spark plug hole.
3. Crank the engine a few times to obtain a reading.
4. Compare the reading to manufacturer specifications; if low, further investigation into engine internals may be required.