1999 Pontiac Firebird Formula, AutomaticFACTORY OEM SERVICE PROCEDURE

DTC 44: Last Transmitter Message Received Had Encryption Error: Testing

  1. Enter self-diagnostics. See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS)  under SELF-DIAGNOSTIC SYSTEM. Depress any button on remote control door lock transmitter. If DTC 44 sets, go to next step. If DTC 44 does not set, system is okay at this time. See DIAGNOSTIC AIDS  .
  2. Reprogram transmitter to communicate with BCM. See TRANSMITTER PROGRAMMING/SYNCHRONIZATION  under PROGRAMMING. Enter self-diagnostics. Depress any button on remote control door lock transmitter. If DTC 44 sets, go to next step. If DTC 44 does not set, system is okay at this time. See DIAGNOSTIC AIDS  .
  3. Program a known-good transmitter to communicate with BCM. Enter self-diagnostics. Depress any button on remote control door lock transmitter. If DTC 44 sets, go to next step. If DTC 44 does not set, go to step  5 .
  4. Replace BCM. See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION.
  5. Check for bad battery in original transmitter. If battery is okay, replace transmitter.
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