check engine light and trac light came on, codes was 21-27 and 28-29, front and rear 02 sensors, i had them replaced at the shop with Denso oe identical fit 02 sensors they cleared the codes and one day later the check engine is back on showing the same codes, i unhooked the battery for 10mins, hooked it back up and guess what? the check engine light is back on showing the same codes again!!! what should i do next??? thx for your help