2000 accord 4cyl CEL
 

i was recently on here about my primary o2 sensor throwing the code po135 (sensor failure) along with the sensor failure im having a couple more issues, when im come to a stop my car shakes and idles really weird, i took the car to a Honda specialist and they said with the primary o2 sensor being bad and not workng that would cause my car to shake like that due to the sensor being faulty and my gas running to rich and some other BS with the air flow. It made sense to me but as of yesterday my car is hesitant to start and its never had that problem before,could that be from the sensor as well? Help.

Def want to address the code first, have to rule out known issues before going after other things.