how to fix P0302 misfire code in Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Tesla Model S. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shock.
• Allow the vehicle to cool down before beginning work.

2. Inspect and Replace Ignition Components

• Inspect Ignition Coils:

  • Remove the engine cover if applicable.
  • Disconnect the electrical connector from the ignition coil for cylinder 2.
  • Remove the ignition coil using a socket set.
  • Inspect for cracks or damage.

• Replace Ignition Coil (if needed):

  • Install the new ignition coil in cylinder 2.
  • Reconnect the electrical connector.

• Inspect Spark Plug:

  • Remove the spark plug from cylinder 2 using a spark plug socket.
  • Check the condition of the spark plug (look for wear, carbon buildup, or damage).

• Replace Spark Plug (if needed):

  • Install a new spark plug with the correct gap (check manufacturer specifications).
  • Torque the spark plug to the recommended specification (usually around 12-15 ft-lbs).

3. Reassemble and Clear Codes

• Reattach any components or covers removed during inspection.
• Reconnect the negative terminal of the battery.
• Use the OBD-II scanner to clear the codes and reset the check engine light.

4. Test Drive

• Drive the vehicle under various conditions to ensure the issue has been resolved.
• Monitor performance and ensure there are no new codes.