The car is a 97 Boxter with around 116k miles. I just replaced two 02 sensors after the cats because of codes the car was giving me. Now after a weekend trip and a couple hundred miles the check engine light reappears and is giving me the following codes.
P1411 Secondary Air Injection Cyl 4-6
P1121 O2S heater 2 behind cat. converter Cyl. 1-3
P1117 O2S Heater 1 Behind cat converter 1-3
P1126 O2S Sensing Range 1 Cyl. 4-6
Thank you for any help provided.
The car seems to be running fine so no noticable problems from driving, but I would like to take care of any issues.