Replacing Ford AU26C315A and 1R236C315AA. Cross Reference + CAS-085 SC054 AU26C315A 1R236C315AA. Genuine Goss SC054. Goss equivilant SC504. - Crank angle sensor. A crank angle sensor is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft.