code reposting ....I have a 2008 Sebring got the code p013a (bank 1 sensor 2) had the sensor replaced 3 times twice by local mechanic once by dealership and had the cat replaced by local mechanic still getting the same code

 

that would be the down stream O2 sensor, you need to find a shop that can scan it and do wave form patterns on the O2 sensors,I would not take it to the dealer, seems independent shops & tech's spend more time to actually find the problem instead of getting done and moving on to the next vehicle, do a google research with customer reviews in your area..

 

I cleaned the air filter out and didn’t get the codes again ....

 

a clogged air filter would have caused a rich condition, looks like you were not having a lean condition if this fixed it, great, your up & running.. thats what it's all about..