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
– Rear ABS Sensor harness is open or shorted
– Rear ABS Sensor circuit poor electrical connection
– Faulty Wheel Speed Sensor
– Wheel bearing
Tech notes
There is factory service bulletin for the following Lincoln models:
2002 Lincoln Aviator
2003 Lincoln Aviator
2004 Lincoln Aviator
Lincoln Aviator Factory Service Bulletin OBDII Code C1237
Symptoms
– ABS light ON
LINCOLN Technical Service Bulletins for C1237 code
2003 LINCOLN AVIATOR SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
2004 LINCOLN AVIATOR SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
2003 LINCOLN AVIATOR SERVICE BRAKES, HYDRAULIC:ANTILOCK:CONTROL UNIT/MODULE
2004 LINCOLN AVIATOR SERVICE BRAKES, HYDRAULIC:ANTILOCK:CONTROL UNIT/MODULE