Thank you for replying! I understand that reading the codes is essential. In this case, it had the 2513 code, meaning swirl flap failure. My question is mostly of principle, to better understand how things work: If a sensor signals a problem to the ECU with an error code, and the error is fixed, will the stored error still cause limp mode and motor check lamp until the ECU is cleaned? Or does the lamp and limp mode mean that a sensor still sends continous error signals to the ECU? Of course, I will go to a garage to have the codes pulled once again.