had a abs code c1330 front right wheel speed sensor" electrical fault. and on the center display it says esp / asr system faulty , i got a new abs sensor , cleared codes and fault came back after few engine run / off cycles. next i disconnected the lhs abs sensor and got fault for the lhs.i then plugged the new one in the lhs and put the known working one in the rhs, the codes cleared but after a few engine run / off cycles the rhf came back on and the lhs turned of, this was without the car moving. .i put the scan tool on and got speed readings ( kph) on all sensors except the rhf. i checked for continuity from rhs sensor plug to where it joins with the other wires in the loom. its not the sensor or corrosion .... any one got any ideas what to check next ?