Hi, on my 407sw 2.0hdi the esc & abs warning lights both came on, fault codes that would not clear were c1300 & c1320. The latter being left front wheel sensor that I have replaced & the abs light has gone out, but esc warning is still on. Fault code c1300 is pressure sensor supply. I know that the pressure sensor is in the pump, but before I go to the trouble of replacing the pump can I check the wiring to the sensor in any way? I already have a second hand pump & have tried swapping the ecu over, but made no difference!