Reset Porsche Check Engine Light | Clear DTCs

What you will need

• OBD-II Scanner

Procedure

Follow these steps to reset the check engine light on any Porsche vehicle.

1. Locate the diagnostic port. In most cases, the diagnostic port will be located under the dashboard on the driver's side. On some Porsche models such as the Boxter and Cayman, the port will be located on the passenger side.
2. Plug the scanner into the OBD-II port.
3. Turn on the ignition, then press enter on the scanner. Wait for a minute for the scanner to communicate with the vehicle. Do not start the engine. 
4. Next, scroll down to Erase Fault Codes.
   
5. Press Enter to erase the codes and clear your Porsche check engine light.

Notes

• Porsche check engine lights and fault codes should only be cleared after fixing the underlying problem.
• Erasing Porsche check engine light without completing the needed repair does not fix the problem and will erase fault codes that would be helpful for diagnostics.
• Porsche check engine lights will come back on if you clear the codes without fixing the problem.

Conclusion 

There are hundreds of possible problems that can cause the check engine light on your Porsche to stay on. The most common issues are spark plugs, oxygen sensors, and catalytic converter failure. Instead of guessing what is wrong, use an OBD-II scanner to read the fault codes.