P0128 Hyundai -

Question

Hi my check engine light went on in my 2011 Elantra touring it seems to me that the Rpms are running a little high too since the cold weather hit. I got a p0128 code when checked which is the cooling system, are the higher rpms related or is this a different prom?

Answer 1

P0128 Engine coolant thermostat below regulating temperature

The high RPM is related to this code that you have, This code is more of a condition with the thermostat itself,