how can I fix the P0301 misfire code in 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 tools and parts needed.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

• Remove the ignition coil by unscrewing it (typically requires a socket set).
• Pull out the spark plug using a spark plug socket.
• Inspect the old spark plug for signs of damage or wear.
• Install a new spark plug (check for the correct gap and torque to manufacturer specifications, usually around 13-15 lb-ft).

3. Test/Replace Ignition Coil

• If the ignition coil shows signs of failure from diagnostics, replace it:
  • Disconnect the electrical connector.
  • Remove the ignition coil from the spark plug well.
  • Install the new ignition coil and reconnect the electrical connector.

4. Inspect/Replace Fuel Injector

• If the fuel injector is faulty, replace it:
  • Disconnect the fuel line (ensure to relieve fuel pressure first).
  • Remove the electrical connector from the injector.
  • Unscrew and remove the injector.
  • Install the new injector and reconnect the electrical connector and fuel line.

5. Compression Test (if necessary)

• If misfires persist, perform a compression test:
  • Remove spark plugs from all cylinders.
  • Insert a compression gauge into cylinder 1.
  • Crank the engine and record the pressure; it should be within the manufacturer's specified range.

6. Reconnect Battery and Clear Codes

• Reconnect the battery.
• Use the OBD-II scanner to clear the P0301 code.