What's Wrong With Your 3rd-Generation Prius' EGR Valve?
The third-generation Toyota Prius is a reliable and efficient vehicle, but you'll still need to pay attention to a few maintenance issues to keep yours on the road. Like any car, there are common failure points that will occasionally require attention and repair. One common problem experienced by many Prius owners relates to the EGR valve. Don't worry if you aren't familiar with this particular component. Although the EGR system isn't unique to the Prius, it is a somewhat esoteric emission and efficiency-related part.