My CE light came on a few months ago. I had it scaned and 2 02 sensor failures showed up. They are p0155 and p0141. Is it possible that both of these sensors could have failed at the same time? Im not a mechanic but to replace them looks expensive. I have 85k miles. I did some research and some mechanics say that when both fail together it could be electrical and maybe not a sensor failure. Also which 2 sensors are these and where are they located. Thanks.

Just replace em n see if that fixes the problem. Sometimes they just go!

there is a software update for slow O2 sensor response on 01-02 diamantes

I have the same sensor failure. Shows to be the heater circuit. Is the software update you mentioned installed be the dealer? Thanks

How would you upgrade the software?