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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
I had a dead battery which had to be jumped. Afterwards, the AdvanceTrac light is stuck on with codes C1998 and C1991…Module Calibration Failure. ABS light is not on. I checked for fuses and can’t find any bad. The only reference I can find to a relay is in the Canadian models. That slot is not...