how to address P0301 code in 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 prevent any electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, torque wrench, ratchet, gap gauge.
• Remove the ignition coil from cylinder 1 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; if it is fouled or damaged, replace it.
• Ensure the new spark plug is gapped correctly according to manufacturer specifications (typically 0.9-1.1 mm for most Renault models).
• Install the new spark plug and torque it to manufacturer specifications (usually around 20-25 Nm).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, check the ignition coil for any cracks or damage.
• Tools Required: Multimeter (optional for testing).
• If faulty, remove the ignition coil by unscrewing it and unplugging it from the harness.
• Install a new ignition coil and ensure it is securely fastened.

4. Inspect and Replace Fuel Injector

• If the ignition system checks out, inspect the fuel injector for cylinder 1.
• Tools Required: Fuel injector removal tool, socket set.
• Disconnect the fuel line and electrical connector from the fuel injector.
• Remove the injector by unscrewing it from the intake manifold.
• Clean the injector or replace it if it is clogged or damaged.
• Reinstall the injector and reconnect the fuel line and electrical connector.

5. Reassemble and Test

• Reattach the ignition coil and any components removed during inspection and replacement.
• Reconnect the battery.
• Start the engine and allow it to reach operating temperature.