how to fix P0301 misfire code in Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle battery to ensure safety during repairs.
• Allow the engine to cool before proceeding.

2. Replace Spark Plug

1. Remove Engine Cover
   • Use a socket set to remove any bolts securing the engine cover.
2. Access Spark Plug
   • Remove the ignition coil by detaching the connector and unscrewing the mounting bolts.
3. Replace Spark Plug
   • Use a spark plug socket to remove the old spark plug. Inspect the threads for debris.
   • Apply anti-seize compound on the new spark plug threads and torque it to the manufacturer’s specifications (typically around 13-16 lb-ft for most applications).
4. Reinstall Ignition Coil
   • Reattach the ignition coil, ensuring the connector clicks securely.

3. Inspect and Replace Ignition Coil (if necessary)

1. Testing Ignition Coil
   • Swap the ignition coil from cylinder 1 with another cylinder (e.g., cylinder 2).
2. Check for Misfire Change
   • Clear the trouble codes and test drive the vehicle to see if the misfire code follows the ignition coil.
3. Replace If Faulty
   • If the misfire code moves to the other cylinder, replace the ignition coil with a new one, ensuring proper torque on the bolts.

4. Inspect Fuel Injector

1. Remove Fuel Injector Connector
   • Disconnect the fuel injector connector for cylinder 1.
2. Test Injector Operation
   • Use a noid light to check for pulse signal while cranking the engine. If no signal, inspect wiring.
3. Replace Fuel Injector
   • If the injector is faulty, remove it using a fuel injector puller and install a new one, ensuring it’s properly seated.

5. Final Steps

• Clear any trouble codes using the OBD-II scanner.
• Reconnect the battery and start the engine to verify repairs.