[Stealthee]

If a scanner won't tell you which sensor is dead you could do some basic diagnostics to find the culprit. I'd start with a visual inspection. More often than not its going to be a front sensor. Look for any breaks. Be aware that the wheel bearing could cause the fault too.

If you can't find any visual issues you could test the sensor(s) by unplugging it, and using a multimeter to test for functionality. There are tons of write ups all over the internet and even YouTube videos explaining how to do it.