Although I still dont show the P0057 being an option on my list for your year, the generic standard is it's Powertrain:HO2S Heater Control Circuit Low Bank 2 Sensor 2
and the C1201 shows to be
Toyota: Brake Boost Sensor Circuit Range/Performance.
But as stevew84 said, it may go away after you fix the powertrain problem.
Thursday, July 23rd, 2009 AT 6:34 PM