Ok so a while back i had an intermittent ABS warning light come up which in time became permenant. Diagnostics could not communicate with the ABS module so my 1st step was to replace it with a salvage part. After doing so the main brake warning & alarm went away but the yellow ABS light remained , and diagnostics could now read the module and give an error code '00287' which is the rear/right ABS sensor. I then replaced the sensor but the fault code remained. I'm running out of ideas & money, do i assume that the salvaged ABS module came with a fault? or is there a problem elsewhere? Please, can anyone help or suggest what to do next.