This is an error as opposed to an alarm? Is the alt-name, error or aux 3842?
In general the test memory 1a (or whatever) and save translations will usually clearm card-mem alarms. If it doesn't it looks like your flash card has died.
In general, you can find all the alarms in the maintainence objects chapter of the manual. However, if you give me an e-mail address I can send you a small program that can help in decoding MO alarms.
Hope this helps,
Chris