10 long flashes 1 short (1001) - Front left heated o2 sensor heater

9 long flashes 2 short (902) - Undefined



I had no check engine lights before I replaced my transmission. I checked and everything is hooked up and grounded properly. Now that I have it all back together for some odd reason I am getting these two codes.

The first one I do not understand at all, as I had a different front o2 sensor code previously and I replaced both front o2 sensors. I didn't even touch the o2 sensors. Why would this be acting up all of a sudden?


As for the second code, the ECU decoder here: http://vbxmaxima.8m.com/ecudecoder.html

Says undefined. Does anyone know what this one means?

Thanks








EDIT: Ok, this is odd,the code wasn't in the ECU decoder but it was in the sticky. So it appears now that all of a sudden from doing my transmission, both front oxygen sensors have problems with the heating element.

I don't believe I touched anything to do with the o2 sensors or their harnesses, yet obviously something went wrong. Is there anything that has to do with the o2 sensors anywhere near the transmission? The only thing I can think of is the engine ground, I just put it back in but I didn't sand it clean or anything. Could that have anything to do with it? If my engine wasn't grounded well enough though I would assume I would be having problems with my ignition and whatnot as well, but it all seems to be working fine.

 

I think its just a coincidence......replace them and see if that fixes it....

 

My 02 sensors? They are only a month old.

 

I don't know what it could be; but just because they are that new doesn't really mean anything. I got my car all fixed up so it could pass NJ inspection. Which I had to replace 2 o2 sensors. About 3 weeks later check engine light back on. It threw the code for one of the o2's I already replaced. I had got a heck of a deal so the sensors were direct from Nissan and a Nissan Mech that I know installed them. So don't count that out!

 

Have you checked the connectors for the sensors, see if they got damaged or unplugged during the swap?

Did you drop the Y at all?

 

Nope, I didn't touch the Y-pipe, the sensors, or the harnesses. I checked and they are plugged in.

Also, tonight I just had a strange problem with my audio as well. Perhaps something isn't grounded properly. I am going to check that out next.