This is interesting. I put a 5.9 and 46re in my Wrangler. And I'm getting these pesky trans codes over the last couple months. Sometimes it's only the gov pressure code and it will not go into 1st. But then other times I get a couple codes and it will drive perfectly fine. I did put new o2 sensors when I put the engine in. But the last time I got these codes an O2 was one of them.