Day said, I have the following problem, I suddenly have several error codes in it which are permanent, after delete and start the engine all errors come back immediately at the same time. Errors would be: LMM defective- a year ago renewed by bosch rear knock sensor- have 2 new installed of bosch Lambda values in the border area DK signal unplausible- have other used installed cooling signal faulty Volvo told me then it could be a mass error, have taken off the suction bridge, all mass cables free of corrosion and fixed again, after that unfortunately the errors still remain. What else for reasons besides mass errors? They have said that they are straight stunned and think about how we can continue or rather look. would be cool if someone else knew what could cause so many errors at once. At the moment the good one drives in emergency run, that sucks totally.. Greeting!