O2 simulator
O2simulator.com After catylitic O2 sensor simulator doesn't work, its garbage, no response from seller we
I was getting a code PO140, inactivity of the aft O2 sensor on my 96 Beretta. I replaced that sensor with a brand new $80 unit. I still got the PO140 code. I checked all the wiring and those were all good. I worried it might be the Catalytic converter was shot. I decided to try the simulator ...