I've got a 1994 940 8 valve , normally aspirated with Regina Fuel injection. The car has 54,500 miles and in nice shape.

Less than 9,000 miles ago (last year) the catalitic converter and the $142 o.e. Bosch oxygen sensor was replaced because of failed emmisions test...since then everything has worked fine until today.

The "check engine" light came on, the computer code reads 1-1-1 , which puzzles me. I even cleared the code to eliminate the check engine light. I also reset the "engine service" light in the instrument cluster which probably has nothing to do with the 'check engine' light.

Check engine, typically indicates something wrong with the emmisions system.....is there anything else that I missed?

Duck