Uncountable:
* When referring to the general ability to perceive, understand, and feel: *He has a strong sense of justice.*
* When referring to a particular feeling or awareness: *A sense of dread filled the room.*
Countable:
* When referring to a specific type of perception or understanding: *The five senses are sight, smell, taste, touch, and hearing.*
* When referring to a particular meaning or interpretation: *What's the sense of this? I don't understand.*
Here are some examples:
Uncountable:
* *She has a good sense of humor.*
* *There's no sense in arguing.*
Countable:
* *My five senses were overwhelmed by the sights and sounds of the festival.*
* *There are different senses in which the word "love" can be used.*
So, to determine whether "sense" is countable or uncountable, consider the context and the intended meaning.