My Contour SE does the same thing. The Ford dealer says it will cost $2700.00 to fix. Parts include the ABS hydraulic control unit and wire harnesses ( about $1000.00 just for the harnesses)
I was told the wire harness issues under the recall do not apply to this problem. I can also get the abs light to set if I pour water along the drivers windshield which is right above the HCU. I keep putting off going under the car and try to water proof that connection. It is hard to even put your hand on the connector.