how to fix P0302 code in Tesla Model 3 Original (2017-2023)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative terminal from the battery to prevent electrical shock.

2. Remove Ignition Coil and Spark Plug

• Tools Required: Socket set, torque wrench, ratchet.
• Remove the engine cover (if applicable) to access the ignition coil.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil retaining bolt and lift the coil out.
• Use a spark plug socket to remove the spark plug from cylinder 2.

3. Inspect and Replace Components

• Inspect the spark plug for wear; if it's fouled or damaged, replace it with a new one.
• Test the ignition coil's resistance; if it’s out of specifications, replace it with a new coil.
• Ensure the electrical connector and wiring are intact and free of corrosion.

4. Reassemble

• Install the new spark plug into cylinder 2 and torque it to the manufacturer's specifications (typically around 18-20 lb-ft).
• Install the ignition coil and secure it with the retaining bolt.
• Reconnect the electrical connector to the ignition coil.
• Replace the engine cover if it was removed.

5. Reconnect Battery and Test

• Reconnect the negative terminal of the battery.
• Start the vehicle and allow it to idle for a few minutes.
• Monitor for any check engine light reactivation.