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

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Remove the ignition coil cover if applicable.
• Unplug the electrical connector from the ignition coil for cylinder 1.
• Use a socket wrench to remove the ignition coil from the cylinder head.
• Remove the old spark plug using a spark plug socket and inspect it.
  • If damaged or worn, replace it with a new spark plug (OEM recommended).
• Reinstall the ignition coil and reconnect the electrical connector.
• Replace the ignition coil if it shows signs of damage.

3. Inspect and Clean Fuel Injector

• Remove the fuel rail if necessary to access the fuel injector for cylinder 1.
• Disconnect the electrical connector and fuel line from the injector.
• Remove the injector from the rail.
• Clean the injector using a specialized injector cleaner or replace it if clogged.
• Reinstall the injector ensuring proper seating and connection.

4. Perform Compression Test (if required)

• Remove the spark plug from cylinder 1.
• Screw the compression tester into the spark plug hole.
• Crank the engine and note the compression reading; it should be within manufacturer specifications.
• If low, further diagnostics are necessary for engine internals.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal after completing repairs.
• Use the OBD-II scanner to clear the codes from the vehicle's system.