Engine indicator light illuminates without loss of power

Start by checking if the gas cap is properly tightened, as a loose cap can trigger the check engine light. If the light remains on, consider using an OBD-II scanner to read the error codes for more specific information. Let us know how it goes or if you need further assistance!

There is no error code.

(Translated from German)

Double-check the gas cap to ensure it's not damaged and is sealing properly. If the cap is fine, inspect the vehicle's air filter to ensure it's clean and not clogged, as this can sometimes cause the light to come on. Let me know if you find anything unusual or if you need more help!