Guero ... I wouldn't take it to a shop & pay out the *** for them to do something like this (unless your in an extreme hurry to get the car into DD mode).
Paul, yeah, the SPOUT plug is taken out when adjusting timing.
I did some researching on this (212). It is DEFINITELY one of two things. BTW, you're car must be running like **** with this code popping up. Here's the two .....
1.) The stator (a.k.a. the Hall Effect sensor). This is most likely the problem. These cars have a tendency to have this problem. They cost $16-24 at various auto parts stores. You will have to remove the distibutor to take the old one out & put the new one in. 9 out of 10 times with a code 212 this is it (at least that's about what my search revealed).
2.) Thick Film Ignition (TFI) Module. It may just be called an "ignition control module" on our cars, though. It is located under the air intake tube .... close to the strut tower. They cost around $40-45 at local parts stores.
I wish I could help you narrow the problem down to the EXACT one, though. If you give me some symptoms your car has .... I might can help you diagnose a step further. If it was me ... I would just replace both of them ... but I realize you may not want to do all that.