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Its not so much the miles that you drive but more the number of “drive cycles” you have driven. A drive cycle varies from car to car but it usually begins when you start the car drive a certain amount of miles, reach a specific speed. and a specific operating temp. then key off the vehicle. the amount of miles you must drive and the speed you must achieve varies from car to car but i can usually get a car to complete its tests by making 3 drive cycles of 5 miles and maintaining 55 mph for at least 1 mile during each cycle. Hope this helps
my theromstat is stuck open is that conna cause a problem , the operating temp of the car is below 100 degrees usually around 70-80
If your car is not reaching full operating temp then the car is probably never achieving closed loop operation. The vehicle will not be able to do its system tests unless it can achieve closed loop.You should replace the t-stat then try again.
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