I pulled the trouble codes on the '91 Brougham, it first shows 00, which I believe means no trouble, then it shows 149... What does that mean?

Go to the Seville, Eldo forum and click on the sticky PULLING UP CODES. Worthwhile to print this tutorial.

Its been a while since I looked at any code stuff but I think the 1 means its a old code and not a problem its having right now.