keep getting failed codes on emmisions after repais on my 2008 cobalt

Question

Codes P0030 , P0036, P0120, P0135, P0141, P0443.  Plaza Tire replaced both O2 sensor
Direct fit converter  and two exhaust gaskets and still get these codes. Help!!

Answer 1

P0031 H02S Heater control circuit sensor 1

P0036 H02S Heater control circuit sensor 2

P0135 H02S heater performance Sensor 1

P0141 H02S Heater performance Sensor 2

P0443 Evaporative emission (EVAP) purge solenoid control circuit

What all these code have in common is they receive voltage from the same fuse, check the fuse in the engine fuse /relay box, Fuse listed as EXH which is a 10 amp fuse , if open replace the fuse.