Service light...no codes/ '94 850 850

Got back from the UK last night, and pulled the '94 850 n/a out of long term parking at the airport...8 days since last driven.

I got a Service Engine light immediately, but it went out after 2 or 3 minutes. Car ran fine. Stopped a few minutes later for fuel (I left it at the airport nearly empty), and it did the same thing. All day today, each time I started the car, warm or cold, the light came on, and went out in a few short minutes. The car continues to run fine.

I just checked for codes, and both A2 and A6 are 1-1-1. (Nothing else should trigger the light, per VolvoSpeed) Started the engine, and the light came on as it has been. Shut the car down while the light was on, checked for codes, still nothing! I even tried starting the car, and checking while the engine is running (supposedly not advised), still all I get is 1-1-1! Checked all other sockets, and only got the speed sensor signal, as expected.

I did find the rubber fuel line the the fuel rail is starting to crack, no seepage showing but a faint fuel odor under the hood, so that'll need to be replaced, but I can't imagine that triggering the service light. I also replaced the flame trap the day before we left, but had no Service light until last night. I did check to see if it or one of the rubber lines came loose, but they were fine.

Any ideas why the Service light is acting this way?

Thanks!

Ron

Ron/Champ 6