Blizare

Attached are some signals from all 4 wheel speed sensors.
Do these look normal or should I replace them all?
Here I was simply driving from standstill to about 30mph

Blizare

Also as I'm watching the scanner they are all dropping to 0.0 every few seconds and then back up to a normal number....

BOTUS

never looked at a trace

they were designed to fail around the 9 year mark - first symptom is the park brake being "strange", up to 6 months later the ESP light comes on in the instrument cluster

MBCO

You might consider a remove and clean exercise on the sensors that attach to the wheel hub. I replaced both my front sensors when my light come on. Look for posts from Easy Phil on this board for his take on cleaning. Perhaps a dirty sensor is causing flat lines on your scan.