Thread: P0128 code

Originally Posted by Slick2500

To add to what Sven said that wire comes off the front of the engine to the drivers side of the oil fill and goes under the dog bone bracket down to the engine temp sensor kinda in a triangle from the throttle body and thermostat housing. Gm put too much slack in this line and it seems to almost always land on the crossover and get melted. There is also the rare occasion where you get a new tstat and it is bad. I have had this happen to me a few times.

Thanks for clarifying Slick...I'm way too lazy to type all that. LOL