P0134 Hyundai -

Question

I have 2002 Hyundai Accent GL 1.6 L.
I just had a small fender bender where the radiator hit the O2 sensor. There is no apparent damage to the sensor but since the accident the engine light came on.
I run my code reader and it came out with P0030, P0031, and PO134 which they are codes related to the O2 sensor.
How do I test the sensor to see if it is damage?
FYI I just replaced both sensors about 5 months ago.

Thanks