Fixed? Im not 100% sure what it is..
I'll pull codes and get P0136 or P0137 and P0420..
Erase the codes..
Pull them the next time and get just P0420..
Right now I don't know what Im getting, but most likely it's those MIL's causing the CEL..
Wish there were bulletproof MIL's.. Something so cheap causing me so many headaches.
Mark