Postby hong kong phooey » February 28th, 2015, 6:55 pm
there is a ring with teeth on it , give it a wipe just in case grease on it,
did you interfere with the gaping on the sensor or move the sensor while changing the caliper. Check and see if the sensor is pointing on the teeth, wipe the face of the sensor
if all is good try unplugging your battery and mash your brakes a few times.. if that does not work you will have to do a reset