Moin, we have run a V70 Bj 99, 165hp petrol, 217,000, automatic. In the car the MKL burns/burns. Also I noticed that it runs particularly in low-tour driving (curves) restlessly and wants to take bad gas. We read error with VIDA : ECM 2100, ECM 2120, ECM 250A. Air hoses controlled, seem fine. Air filter renewed, DK cleaned, intake tract was however clean. LMM optically also good. Then have replaced the control probe, via Volvo bes Now the faults are gone, but there is a strong, white smoke/Qualm development. Out of the back, and also in the engine compartment in the KAT area. There we look again more closely where it comes from. I actually exclude water, because the car was not moved further, and this smoke development occurred immediately after the new probe. There is also no water in the oil recognizable, and no oil in the cooling water. Also the exhaust gases rather smell “wax-like” chemically. He’s gone, in VIDA you can see how the probe works. Does he press in too much fuel? Why? Clean nozzles? Leakiness BEFORE the control probe gets a false oxygen value? He’s running quietly now, as he’s not yet registered. Appearing to be on all five paws… Thanks already…