Hello everyone, I have a niche predicament and I was wondering if anyone has an answer. After swapping a 4.0 rover v8 into my 03’ discovery and swapping from a 4.6 ECU to a 4.0 with the help of my handy dandy nanocom. I still have stored codes that won’t go away for secondary air injection and, I also used a radiator out of an earlier car so I have a code for the temperature sensor up front since the earlier radiators didn’t have this. I figured when swapping, the computer would magically forget these things because the earlier cars didn’t have either of these features. This was not the case and now I have a stuck on SES light and it is very annoying to look at, so I was wondering if anyone knew a way to get around this. Thanks.

 

Sounds like the ECU you swapped in had those as well.

 

The same car I got the radiator out of without a front temperature sensor I also got the ECU from. The engine in that car was a 4.0 without SAI. I guess it could be possible all that was swapped before aswell but I doubt it. I had these codes stored before I swapped the engine and ECU aswell. Not sure…..