Hi!
K-light is sometimes turn on when I driving my '89 405 Mi16. Its on for a few minutes and turn of. No engine power, I have done diagnostic with some wires, grounding pin no 2 on diagnostic socket and I read the following codes: 51 (oxygen sensor), 52 (mixture regulation), 31 (mixture regulation auto-adaptation, 13 (inlet air termistor)
Now,question is,what to do? Changing oxygen sensor? Air flow meter problem? Or ... ?