Possible causes – Faulty Rear ABS Sensor– Rear ABS Sensor harness is open or shorted– Rear ABS Sensor circuit poor electrical connection– Faulty Wheel Speed Sensor– Wheel bearing Tech description There is factory service bulletin for the following Lincoln models: 2002 Lincoln Aviator2003 Lincoln Aviator2004 Lincoln AviatorLincoln Aviator Factory Service Bulletin OBDII Code C1237 Symptoms…