July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Code 12: (Throttle Sensor)

WARNING: This page is about a different car, the 1994 Mazda 323. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Trouble Code No. 12 Diagnostic Chart (Throttle Sensor - 323)

Courtesy of MAZDA MOTORS CORP.