One problem related to engine has been reported for the 2006 Toyota Prius. The most recently reported issues are listed below.
I have a 2006 Prius. When going over bumps, I experience a total loss of power for 1 or three seconds -generally. A yellow light also comes on the dash board. It often happens daily. I have only had one or two experiences when the power didn't return so quickly and then I was afraid because I had no brakes and was just skidding. I believe that I have seen this problem discussed by other Prius owners of chat sites. It can occur at any mileage speed but I was only able to put a mileage number in the box can it be fixed?.