i continue to get this code even though the coolant and engine temp are good. i changed the coolant over flow tank. could the system be reading the temp there? the code comes up only in the afternoon when the ambient temp is above 20ºC/ 50ºF. Mornings are below 0ºC/20ºF and no check engine light. car seems to run well. i clear the code and all is good fro awhile and then the check engine light comes on with the same code. any ideas on solutions. i have the bentley book for the 2001 and don't see any trouble shooting guide for the code.
thanks in advance. mhg
The car looks at engine temp and running time and knows that the engine should reach a certain temp in a given time. If it doesn't reach temp fast enough you get a cooling malfunction code. It is usually the t-stat.