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Code 53 - Diagnostic Monitor Internal Fault: Notes

WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, 1995 Ford Cab & Chassis, and 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before proceeding, see SERVICE PRECAUTIONS. After servicing has been performed, recheck AIR BAG warning light for codes with Air Bag Simulators (105-00010) still in place of air bag modules. If system is okay, install air bag modules and reactivate air bag system.