Hi everybody, I have an AUDI A6 2.5TDI with ABS problem. I check the problem with a pc .It gives me REEL SENSOR FRONT RIGHT defect. With my oscilloscope i chek the sinusoidal signal from all the 4 sensor. I get a sinusoidal signal from about 3V ptp when the reel is turning, only on the front left reel i get around 0.5V ptp. But i check the signal of the FRONT RIGHT REEL as the pc-diagnostic says and the sensor seem to be ok!!!! During driving i check with the pc if i get information on the 4 sensors. In fact on the RIGHT FRONT SENSOR i get no impulse!!!! Can somebody help me?