how to fix P0301 misfire code on my Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and safety equipment.
• Disconnect the 12V battery to ensure safety while working on electrical components.

2. Remove the Ignition Components

• Tools Required: Socket set, torque wrench, ratchet.
• Remove the engine cover (if applicable) by unscrewing the bolts.
• Locate and remove the ignition coil for cylinder 1 by disconnecting its electrical connector and unscrewing it.
• Remove the spark plug using a spark plug socket and ratchet.

3. Inspect and Replace Parts

• Inspect the Spark Plug:
  • Check for signs of wear, carbon buildup, or damage.
  • If necessary, replace with a new spark plug that meets manufacturer specifications.
• Inspect the Ignition Coil:
  • Check for cracks or signs of failure.
  • Replace with a new ignition coil if defective.
• Inspect the Fuel Injector:
  • Clean or replace the fuel injector for cylinder 1 if clogged or malfunctioning.

4. Reassemble Components

• Reinstall the new or cleaned spark plug and torque to manufacturer specifications (typically around 15-20 ft-lbs).
• Reinstall the ignition coil and ensure it is securely fastened.
• Reconnect the electrical connector to the ignition coil.

5. Reconnect Battery and Test

• Reconnect the 12V battery.
• Start the vehicle and allow it to idle for a few minutes to ensure proper operation.