Wideband Issues

[LingLing]

Product in question: Innovate LC-1 Wideband

I went to go get gas last night, and it worked perfectly when I pulled up. Came out, started my car and now it just shows three dashes (---). This morning I drove it around the block and it just read 7.4 the whole time. Pulled back in the parking lot, shut the car off, and restarted it and all it showed was those 3 dashes again.

I looked through the user manual and it says it should be recalibrated every 3 months or 10k miles. It seems like something I should try, but the fact that it's worked perfectly this whole time then just craps out on me seems odd. Any ideas? I'll be checking my connections later. Assuming they are all good, what do you guys think is going on?

Bad sensor?
AIDS?