why is my Tesla Outback's engine light flashing when idling

Learn how to diagnose and fix P0300-P0304 engine light flashing in Tesla Outback. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Retrieve and Analyze Diagnostic Codes

• Use an OBD-II scanner to retrieve error codes.
• Note any codes related to misfires (e.g., P0300 - P0304) which indicate cylinder misfires.

3. Inspect Ignition System

• Remove the engine cover if necessary.
• Check spark plugs for wear or fouling; replace if necessary using a torque wrench set to manufacturer specifications (typically 15-20 lb-ft).
• Inspect ignition coils for cracks or corrosion; replace any faulty coils.

4. Examine Fuel System

• Connect a fuel pressure gauge to the fuel rail.
• Start the engine and check the pressure against manufacturer specifications (typically around 40-60 psi).
• Replace the fuel filter if pressure is low or if there are signs of clogging.

5. Inspect Intake and Exhaust Systems

• Visually inspect the air intake hoses for cracks or loose connections; replace as needed.
• Check for vacuum leaks around the intake manifold and use a smoke test if necessary.
• Examine the exhaust system for blockages or damaged components, particularly the catalytic converter.

6. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and observe for any remaining symptoms or warning lights.