Hello together! I would like to introduce myself briefly. I am Markus and live in Ostallgäu. Our car, a Volvo 850 2.5 20V 125KW/170PS. Year of manufacture 1994 combi switch. For some time I have been reading with you and must say excellent forum. Super! Now I come to the problem what I have. The thickness stood about 3 months, on the one hand because my wife has a company car and I have been working for a long time abroad. When I started the car last week, he does not run any more and. He didn’t hold the speed at all and the engine went out immediately. The lamp lamp didn’t go out any more. He always let himself start immediately and with a light gas until he was a little warm, he didn’t go out any more. I then first took off the plug from the LMM and sprayed in with contact spray. Cables are no lots also otherwise visible everything is OK. I have read out the error memory Diagnosis box A slot 2 and 6. It of course flashed. Then I have the error gel The Lambda light just doesn’t go off. Today I wanted to go to the bottom of the thing again and notice that the diagnostic box no longer blinks, neither slot 2 nor 6. Hab tried everything. My question, can the box go defective, can you just replace it???? The car has an immobilizer (VDO plug in the amature carrier) What can I do? The engine is not working well in cold condition, goes out because he doesn’t hammer the speed. In warm condition he runs at approx. 1000-1100 u/min, which is much too high. Freu mich über helpfule Reply. Greeting to all.