how to resolve P0302 misfire code in Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel injector cleaner, multimeter.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Locate the spark plug in cylinder 2, using the socket set to carefully unscrew it.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with one that meets OEM specifications (usually NGK or Denso).
• Torque the new spark plug to the manufacturer’s specifications (typically around 13 ft-lbs).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil in cylinder 2.
• Remove the ignition coil using a socket set.
• Inspect for any signs of damage or corrosion.
• If a replacement is needed, install a new ignition coil ensuring it matches OEM specifications.
• Reconnect the electrical connector and securely attach the coil.

4. Inspect Fuel Injector

• Access the fuel rail and disconnect the fuel injector connector for cylinder 2.
• Remove the fuel injector using appropriate tools; inspect for clogs or leaks.
• If necessary, clean the injector with a fuel injector cleaner or replace it with a new one.
• Reinstall the injector, ensuring proper alignment and secure connections.

5. Compression Test

• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine several times.
• Record the compression reading and compare it to manufacturer specifications (typically around 140-200 psi).
• If the readings are low, further investigation into engine internals may be required.