Volvo Repair: 850 ck engine lite, volvo code, jumper wire

Question
My 1997 850 GLT has a ck eng. lite and trouble code po410 (volvo code EFI-442,448,446,445) I changed the air pump relay because in was full of water and grounded, but the same code came back after 2 days of driving. I have been told the air pump may be bad , but would like to verify before replacing. Also, how do I reset my Service lite?
          Thanks,
            Tim

Answer
You could verify the pump is bad by running jumper wire to it with power and ground and see how it runs, if at all.  If it sounds sick then it needs to be replaced.  Older cars like that usually have the service light reset with the trip odometer reset button.  Push and hold until the service light flashes, then let go after it flashes for 2 seconds but no longer than 5 seconds.  Its been a while since I've messed with one of those I'll double check tomorrow.

James