ABS light on - ABS sensor on my front driver side wheel

When you say you drilled it out, do you mean that you could not remove it and drilled it out and replaced it?

Here is a guide on how to test this:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Also, below is the info from the manual on how to test this code.

Basically you need to inspect the enoder ring for damage or missing teeth and if there are no visible signs of damage then I would suspect the sensor is the issue. However, if this is new and you still have this code then inspect that ring really well for damage. If you want the voltage it should be steady on a complete revolution. If there is variation in the signal in the same spot then the ring is damaged and needs replaced.

Let me know if you have other questions. Thanks