how to fix P0301 misfire code in Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface, and the engine is cool.
• Disconnect the negative terminal of the battery.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1 by unscrewing the mounting bolts and disconnecting the electrical connector.
• Take out the spark plug using a spark plug socket. Inspect for carbon buildup or damage.
• If necessary, replace with a new spark plug matching OEM specifications (typically NGK or Denso).
• Reinstall the ignition coil, ensuring it is seated properly and all connections are secure.

3. Test and Replace Ignition Coil (if needed)

• If the spark plug is in good condition, test the ignition coil with a multimeter to check for proper resistance.
• If out of specification, replace the ignition coil with a new one.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Remove the fuel injector for cylinder 1 from the fuel rail.
• Clean the injector using an appropriate injector cleaner or ultrasonic cleaner.
• If cleaning does not resolve issues, replace the fuel injector with a new one.
• Reinstall the fuel injector, ensuring proper sealing and connections.

5. Compression Test

• Perform a compression test on cylinder 1. If compression is low, inspect for potential internal engine issues (valve, piston, or head gasket problems).
• Depending on findings, repair or replace damaged components as necessary.

6. Final Assembly and Battery Reconnection

• Reassemble any components removed during the repair.
• Reconnect the negative battery terminal.
• Ensure all tools are removed from the engine bay.