how to fix P0302 misfire code in Tesla Model 3 Highland (2024-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to ensure safety.
• Allow the engine to cool down completely before beginning work.

2. Inspect and Replace Ignition Components

1. Remove Engine Cover:

   • Use a socket set to remove any bolts securing the engine cover.
   • Carefully lift off the cover and set it aside.

2. Access Spark Plug and Ignition Coil:

   • Locate the ignition coil for cylinder 2 (consult service manual for cylinder layout).
   • Disconnect the electrical connector from the ignition coil.

3. Remove Ignition Coil:

   • Unscrew the ignition coil from the cylinder head using a socket wrench.
   • Gently pull the coil out of the cylinder.

4. Inspect and Replace Spark Plug:

   • Use a spark plug socket to remove the spark plug from cylinder 2.
   • Inspect the spark plug for wear or carbon buildup; replace if necessary with OEM recommended spark plug.

5. Install New Ignition Coil:

   • Install the new ignition coil into the cylinder.
   • Secure it with the screws and reconnect the electrical connector.

3. Check and Clean Fuel Injector

1. Remove Fuel Injector:

   • Disconnect the electrical connector from the fuel injector.
   • Remove any retaining clips and unscrew the injector from the fuel rail.

2. Inspect and Clean:

   • Inspect the injector for clogs or damage.
   • Use a fuel injector cleaning solution to clean the injector if it is clogged.

3. Reinstall Injector:

   • Reinstall the cleaned or new fuel injector in its place.
   • Secure with retaining clips and reconnect the electrical connector.

4. Complete Assembly

• Reattach the engine cover using the bolts previously removed.
• Reconnect the vehicle battery.