My policy is only to replace what's broken. I think there are some cases where the recommendation is to change both sides (suspension parts) ... maybe because you could end up with a leveling or alignment issue there ... but, to my knowledge, this "rule" doesn't apply to Hubs.I have replaced the sensor and disconnected the battery to clear the code an now it gave me a different code "C0040-06 right front wheel speed sensor low voltage/open. So I guess next is replacing the hub. Do you guys think I should replace both sides?
What brand of Sensor did you use for the replacement? If there's nothing wrong with the Magnetic Ring on the existing Hub (you can visually inspect that looking at the back of the Wheel), then I'm wondering why you're still seeing a Code.