I was wondering. If I bought an o2 sim would it be ok to run with the secondary o2 unplugged? I mean the o2 sim is supposed to send false readings to the ecu to imitate a perfectly fine secondary o2 sensor right? I'm asking because my secondary o2 sensor broke and I was wondering if I could get away with just buying an o2 sim to get rid of the passive CEL that I'm getting with my secondary o2 unplugged

 

did one today, we just unplugged the secondary O2... and it ran fine...