Hello together, after my MKL shines again and again (unfortunately not permanently) I have already passed through several workshops. Sometimes the Lambda probe was def., sometimes the LMM, throttle valve sensor… Before I exchange everything I wanted to be friendly. I should come by when the MKL shines. Said done. Only I was there at an unfavorable time, everything was full. I should try again in the next few days. I tried that then and again nothing. the car runs quietly and wouldn’t be particularly striking, I wouldn’t have to worry about big ones. At last I had it. After reading out the error memory was informed that the lambda probe at the upper area regulates. Why??? There could be several causes (air mass meters, false air intake, throttle valve…) To narrow it more closely one wanted to make a “pressure test”. Here came out that the LLK is defective. Therefore, the control unit can not handle the values and If I’m lucky then it was that if it doesn’t have to be checked further which is still defective. Workshop wants to have for LLK with installation ~650€. Almost 400 for LLK + working hours just under 2h. Can you get the LLK cheaper?, does anyone have a reference address for appropriate used parts? The Swedish parts dealers don’t have it at all or only org. Volvo. Does anyone have a usable copy that they don’t need. I have to repair myself. already inquired, does not go there at the LLK plastic elements are firmly attached. I already thank you about information in advance. MfG Kay