how to fix P0302 misfire code on Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel injector cleaner.
• 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

• Remove the engine cover if applicable.
• Locate and disconnect the ignition coil connected to cylinder 2.
• Remove the spark plug using a spark plug socket. Inspect for wear or fouling.
• If replacement is needed, install a new spark plug, ensuring it is gapped correctly (typically around 0.028-0.031 inches).
• Reinstall the ignition coil and engine cover.

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil using a multimeter (check for the correct resistance values as per specifications).
• If defective, remove the ignition coil from cylinder 2 and replace it with a new one.
• Reconnect the ignition coil and any connectors.

4. Perform Compression Test

• If misfire persists, conduct a compression test on cylinder 2.
• Remove the spark plug for cylinder 2 and attach the compression tester.
• Crank the engine and record the compression reading. Compare it with manufacturer specifications.
• If compression is low, further investigation and potential repairs (valve service, head gasket replacement) will be necessary.

5. Clean or Replace Fuel Injector

• If the compression is normal, check the fuel injector for cylinder 2.
• Remove the injector and visually inspect it for clogs or deposits.
• Use fuel injector cleaner or replace the injector if necessary.
• Reinstall the injector and ensure all connections are secure.