When service traction is on, it reduces engine power?

Hello,

There are several factors why you could have reduced power. First of all need to scan the vehicle for codes.
Is there any trouble code? If so do you know what they are?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
https://youtu.be/vMwTzURWXmk

The computer system that controls your car has a built in safety feature called "Reduced Power" or "Limp Mode" which is designed to get the car where it is going under low engine power while protecting the car's engine and transmission. When a malfunction is detected by the computer either from the engine management system or transmission the car should show a Reduced Power and/or the Check Engine Light, some cars will also trigger a Traction Control Light.

Here are some helpful tips for a vehicle in limp mode:

https://www.2carpros.com/articles/reduced-power-limp-mode

https://youtu.be/ZY9IOfVDfSI

As far as the clunking noise, you might have to upload video so we can hear the noise. Does it only happen after the "reduced power"?

Let me know what trouble codes your car generating.

Thank you.