This would be code 25 and 26, my 4runner gives the same codes. I have seen other posts about this with little answers. Several people replaced 02 sensors and it didn't help. I believe my tps(throttle positioning sensor)may be the problem. Im going to try cleaning or replacing it. I read somewhere that a bad egr could be the problem too. If u get the answer let me know please please!! Thanks Ray blurpps@msn.com