what does it mean when my Tesla Outback has a P0303 code?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 3.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one that meets manufacturer specifications (typically NGK or Bosch).

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil for signs of damage or wear.
• If faulty, remove the ignition coil and replace it with a new one, ensuring proper seating.
• Torque the ignition coil to the manufacturer's specifications.

4. Check and Clean Fuel Injector

• Disconnect the fuel injector connector and remove the injector from cylinder 3.
• Clean the injector using an appropriate fuel injector cleaner or replace it if it’s clogged or damaged.
• Reinstall the injector and reconnect the connector.

5. Reassemble and Reconnect Battery

• Reinstall any components removed during the repair.
• Reconnect the negative battery terminal.
• Start the engine and allow it to run for a few minutes to ensure smooth operation.