Hey everyone; yup, that's the same problem; I talked to a tech at my toyota dealership, and he said those two codes together usually indicated a faulty EGR position sensor, a $30 part (one can check the sensor's electrical resistance of the sensor to be sure - get the $10 haynes manual for the car, it has the specs). I bought it and replaced it myslf (easy, just remove 3 bolts and put the new one on), problem fixed!
The week after my downstream o2 sensor went bad... $60 for a universal one, a few hours of work (easy with the haynes manual to help) and that was fixed. Having a car I can work on myself is great

!
BTW, I did run seafoam through it, wow, my tires spin at takeoff now

. Really helped clean out the car, and with all the new sensors and that, I'm getting 50-80 miles more to a tank now depending on how I drive. Sweet.
The Solara is a good choice... I used to have all European cars (got tired of the frequent nd expensive repairs) so I'm still amazed at how much more I can fix myself on this car, and how cheap replacement parts are ^-^.