how to fix P0301 misfire code on 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.
• Disconnect the battery to prevent any electrical short circuits during servicing.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, anti-seize compound.
• Remove the ignition coil from cylinder 1:
  1. Unplug the electrical connector from the ignition coil.
  2. Remove the bolts securing the ignition coil and lift it out.
• Remove the spark plug:
  1. Use a spark plug socket to unscrew the spark plug from the cylinder head.
  2. Inspect the old spark plug for wear and carbon buildup.
• Install the new spark plug:
  1. Apply a small amount of anti-seize compound to the threads of the new spark plug.
  2. Hand-tighten the spark plug, then use a torque wrench set to the manufacturer's specification (typically around 15-20 Nm).

3. Replace Ignition Coil

• Tools Required: Socket set.
• Install a new ignition coil:
  1. Position the new ignition coil into place over the spark plug.
  2. Secure it with the bolts and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Socket set, fuel line disconnect tool.
• Remove the fuel injector:
  1. Relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
  2. Disconnect the fuel line using a fuel line disconnect tool.
  3. Remove the bolts securing the fuel rail and lift it to access the injector.
  4. Carefully pull out the fuel injector from the rail.
• Install the new fuel injector:
  1. Lubricate the O-ring of the new injector with engine oil.
  2. Insert the new injector into the fuel rail and secure everything back in place.

5. Reconnect Battery and Clear Codes

• Reconnect the battery and use the OBD-II scanner to clear the P0301 code from the ECU.