Volvo Repair: 91 240 volvo, nervouse, lambda

Question
Roger,  you gave me some info on how to read the codes on
the onboard computer.  My son read the codes:  first one was 1-2-3 & 2nd one was a long 1.(?).  I emailed you these
codes on 4/7, but not sure if you got them.  Can you tell me what those codes are? The check engine light is still on & i'm a little nervouse about driving the volvo, but i am.
I appreciate your help.     Liz

Answer
Liz, dont be nervous about driving the car.  If its running fine, there is no need to worry.  Most 240 check engine lights are stupid. I wrote you back.  I guess you never got it.  A 1-2-3 is a Lambda code which is an emmissions code.  I would be concerned if the car was running rough.  If the car is fine, then have your son clear the codes like I described.  Roger