Got a question?!?!?!?!?!?! :(

[FASTL61]

So What Would Cause My Engine Coolant To Say ---*F But Not Through A Code?Im Stumped!I Looked At All The Wiring And Connections And They Look Good.Any Ideas?

 

[06_ion2]

replace the sensor? mine was doing this and i just added more water and it went away.

 

[YelloEye]

Reset ECU?

 

[FASTL61]

Coolant levels good.I had a P0420 code come up but thats for my cat and I cleared it today.but now this lol.I guess ill unplug the battery for 30 mins and see what happens.Otherwise...WARRANTY!!!!

 

[Fluffy]

Coolant levels good.I had a P0420 code come up but thats for my cat and I cleared it today.but now this lol.I guess ill unplug the battery for 30 mins and see what happens.Otherwise...WARRANTY!!!!

undo the neg terminal and touch the neg wire to the positive for 10 seconds, that will reset your pcm faster. did that a lot at gm