Any modifications you've done to the car need to be undone, and quickly. This is so the dealership can't claim those modifications caused the problem.So I bought the sensor bypass and I was good for a day after installing it, but today it just threw the same 3 codes.
Does that mean it's the battery that went bad then?
I'm going to schedule a visit to the dealer, so i guess i should plug back in the battery coolant level sensor? Unhook the ground and all that again?