My check engine light came on yesterday with a P0168-Engine fuel over temp. I had this code before in history but the light wasnt on. Has anybody else had this problem? I cant seem to find anything about it on the forums. Any idea what it could be? Thanks in advance

first time I've seen it

You have a fuel cooler on the return side back near the tank... It might be clogged with mud or...? Figure if the fuel is not cooled enough upon return to the tank which builds up, then the fuel supplied to the CP3 (fuel injection pump) is to hot for proper proper operation and a sensor picks this problem up and of course triggers a code... If I understand things correctly fuel that is to hot will not allow the CP3 to work correctly in supplying high pressure injection fuel to the injectors...? May develope air in the system and make it go lean...?

Just my take on it from what I have read...