1998 Ford Taurus security system

Passive Anti-Theft System (PATS) utilizes a self-diagnostic system which stores a Diagnostic Trouble Code (DTC) in the Passive Anti-Theft System (PATS) module if a problem exists in the PATS.

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PRELIMINARY PROCEDURE
Ensure electronically coded ignition key is being used.
Check for damaged ignition lock cylinder switch, damaged encoded ignition key or open fuses.
Check for loose or corroded connectors, damaged wiring harness, damaged ignition switch or damaged transceiver module.
Repair or replace components as necessary.