how to troubleshoot P0301 code in Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle 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

• Remove the ignition coil for cylinder 1:
  • Disconnect the electrical connector.
  • Unscrew the mounting bolts and carefully pull out the coil.
• Remove the spark plug:
  • Use a spark plug socket to unscrew and remove the spark plug.
• Inspect the spark plug for signs of wear, fouling, or damage; replace if necessary.
• Install a new spark plug, ensuring the correct gap is set (consult manufacturer specifications).
• Reinstall the ignition coil, securing it with bolts and reconnecting the electrical connector.

3. Check and Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage or corrosion during inspection:
  • Remove the ignition coil as described above.
  • Install a new ignition coil ensuring it is seated properly in the cylinder head.
  • Reconnect the electrical connector.

4. Test Fuel Injector

• If the injector appears faulty:
  • Disconnect the fuel injector harness.
  • Check the resistance with a multimeter; compare to specifications.
• Replace the fuel injector if resistance is outside specified range:
  • Remove the fuel rail if necessary to access the injector.
  • Install the new injector and reconnect the harness.

5. Verify Compression

• If compression is low:
  • Reinstall spark plug and ignition coil temporarily.
  • Perform a compression test to confirm cylinder health.
• If compression is low, further investigation into the engine internals may be needed.