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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester.
• Ensure the car is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 2.
• Use a socket wrench to unscrew the spark plug.
• Inspect for wear or deposits; clean or replace if necessary.
• If replacing, torque to manufacturer specifications (usually around 12-15 ft-lbs).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• Remove the ignition coil for cylinder 2 by unscrewing it from the cylinder head.
• Inspect for cracks or damage; replace if necessary.
• Install the new ignition coil and secure it with screws.

4. Check and Clean Fuel Injector

• Tools Required: Socket set, fuel injector cleaning kit (if necessary).
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel injector from its rail.
• Inspect for clogs; clean or replace if necessary.
• Reinstall the fuel injector and reconnect the connector.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine to take the compression reading.
• Compare the reading to manufacturer specifications; low readings may indicate internal engine issues.