Had this one come in after someone put a steering angle sensor on it. Electric power steering warning lamp still on codes came up as 16522/p0138 O2 sensor, 00816(eps sensor inop) 01309(steering assistance no communication) and 01309(control unit for eps no communication spradic)
live data ok apart from angle sensor(this is the second new one fitted) CAN BUS signals all getting to where they sould but only about 2.5 volts both high and low CAN, wiring/plugs all ok. and the power steering works apart from the warning light being on. I am thinking that it could be the control unit/electic pump so if any one has any thoughts on how to go about testing one of these please let me know,