how to check for P0301 misfire 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.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the battery before performing any electrical component work.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil for cylinder 1.
  2. Unscrew and remove the spark plug using a spark plug socket.
  3. Inspect the spark plug for wear or damage; replace if necessary.
  4. Set the gap of the new spark plug according to manufacturer specifications.
  5. Install the new spark plug and torque it to the manufacturer's specification (typically 15-20 Nm).
  6. Reinstall the ignition coil.

3. Test or Replace Ignition Coil

• Sub-steps:
  1. Test the ignition coil with a multimeter to ensure it is within specifications (consult the vehicle's service manual for specific values).
  2. If the ignition coil is faulty, remove it and replace it with a new one, ensuring it is securely fastened.

4. Inspect Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a noid light to check for proper pulse signal; if absent, further diagnose the wiring or ECU.
  3. If the injector is faulty, remove and replace it, ensuring proper sealing and torque.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug for cylinder 1.
  2. Insert the compression gauge into the spark plug hole.
  3. Crank the engine a few times and record the compression reading.
  4. Compare the reading to manufacturer specifications; if low, further diagnostics are needed for internal engine issues.