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 Ford models: 2002 Ford Explorer2003 Ford Explorer2004 Ford ExplorerFord Explorer Factory Service Bulletin OBDII Code C1237 Symptoms…