2007 Hyundai sonata 3.3L v6 trans code
I have a 07 sonata with 289,400miles. Today I checked my check engine light and code p0711 shown. Its says bad trans fluid temp sensor. Can I drive with it. Trans still strong just dont want to mess anything up
P0711 is Transmission Fluid Temperature Sensor Range Performance. You have to replace the transmission fluid temperature sensor. Considering that your car is close to 300k, replace the sensor now before driving.
your description is incorrect. The code definition is not "bad sensor".
But if the problem does turn out to be the sensor, then here's a step-by-step. It was one of the 1st results in a web search.