It's a phrase that expresses a strong negative, indicating that something is impossible, unlikely, or unacceptable.
Here are some examples:
* "Que no va, no te voy a dejar ir solo." (That's not going to happen, I'm not going to let you go alone.)
* "Que no va, no me gusta esa idea." (That's not going to work, I don't like that idea.)
* "Que no va, ya te lo he dicho." (That's not going to happen, I've already told you.)
It's important to note that "que no va" is a somewhat informal expression. It might not be appropriate in all situations, particularly in formal settings.