how to fix P0302 misfire code on Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench
• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 2 and remove it using the spark plug socket.
• Inspect the spark plug for wear, fouling, or carbon buildup.
• If damaged, replace it with a new spark plug, ensuring it matches the manufacturer specifications.
• Torque the new spark plug to the manufacturer’s recommended value (usually around 15-20 ft-lbs).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil from its position.
• Inspect the coil for cracks or damage. If faulty, replace it with a new ignition coil.
• Reinstall the new ignition coil and reconnect the ignition coil connector.

4. Check Fuel Injector

• Tools Required: Fuel injector cleaner
• If the injector is suspected to be clogged, remove it for inspection.
• Clean the fuel injector using a fuel injector cleaner or replace it if necessary.
• Reinstall the fuel injector and ensure proper connections.

5. Final Assembly

• Reattach any engine covers that were removed.
• Reconnect the negative terminal of the battery.
• Start the engine and allow it to idle for a few minutes.