Stand-by mode of the oxygen sensor

Hello to all,
I have an oxygen sensor MIX8410 connected to arduino uno board. I put the code given on seedstudio. Everything works. Except that the sensor seems to go into standby rather quickly: voltage read 0V. if I restart the program it gives a consistent value …
do you know this problem? is this done to extend the sensor’s lifetime?

Hi @Skyboune, I don’t have any experience with this particular sensor you mentioned, but I am curious to know the problem, so can you share the code and connection diagram you are using!