socram420

I had to replace my converters on a 08 f150 fx4 and used some universal aftermarket cats, but a day after install engine light came on. Took it back to the shop and they installed a different heavy duty performance set but engine light came on again. Throws a code for bank 1 sensor 2. Guy said he checked the sensor and it was fine. Wondering if I should replace them anyway. Would the cat itself be causing the light to come on? Any input in appreciated. Thanks