how to fix P0303 misfire code in Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Replace Spark Plug

• Tools Required: Socket wrench, spark plug socket, torque wrench.
• Remove the ignition coil from cylinder 3 by unscrewing the bolts.
• Remove the old spark plug using a spark plug socket.
• Inspect the new spark plug for proper gap settings as per the manufacturer specifications.
• Install the new spark plug and torque it to the manufacturer’s specifications (usually between 13-20 lb-ft).
• Reattach the ignition coil.

3. Check and Replace Ignition Coil (if necessary)

• Tools Required: Socket set, multimeter (for testing).
• Test the ignition coil using a multimeter to check for proper resistance.
• If faulty, remove the ignition coil from cylinder 3.
• Install the new ignition coil and reconnect all connectors securely.

4. Clean or Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Disconnect the fuel line and electrical connector from the fuel injector.
• Remove the fuel injector from cylinder 3.
• If cleaning, follow the instructions for the cleaning kit. If replacing, install the new fuel injector.
• Reconnect the fuel line and electrical connector.

5. Reassemble and Test

• Reconnect the battery.
• Start the engine and check for any abnormal sounds.
• Clear the P0303 code using the OBD-II scanner and monitor the engine for any reoccurrence of the misfire.