Originally Posted by flash1034
Well, what was it?
Actually we didnt know for sure.
The guy told me that he update the software in the ECU and they cleaned the o2 because we put new original mopar o2 and still the same codes.
So what they did and now the jeep runs better than ever.
Cleaned all the connections
An that was it.
But they told me, that if the MIL comes back on i will need to change the complete ECU because it wasn't reading the two upstream o2s
So far 700miles and still no mil.
Hope that was the problem