Peter

sorry, 13mA was always meant engine off (should actually be 20mA)

If my O2 sensor readings vary between 0.02 and 0.95V (applying 1V to / grounding of the KE side of the unplugged sensor connection), the O2 sensor should be ok, right?

I want to test my injection valves first and then I will reset the mixture according to duty cycle (measured by average volts) and EHA current.

However, I still wonder if I should do something about the low KonEoff EHA current of 13mA?! I don't see a deterioration when the engine is running now. Actually it is the opposite way as I fixed the bad OVP during the time when the decline of EHA current (KonEoff) occured (happened just before I fixed it, hence it's no result of this repair).

Tom