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Diagnostic Trouble Code Table

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODES (DTC) LIST

DTC Description
DTC B2780  PUSH SWITCH/KEY UNLOCK WARNING SWITCH MALFUNCTION
DTC B2784  ANTENNA COIL OPEN/SHORT
DTC B2793  TRANSPONDER CHIP MALFUNCTION
DTC B2794  UNMATCHED ENCRYPTION CODE
DTC B2795  UNMATCHED KEY CODE
DTC B2796, B2798  NO COMMUNICATION IN IMMOBILIZER SYSTEM & COMMUNICATION MALFUNCTION NO. 2
DTC B2797  COMMUNICATION MALFUNCTION NO.1
DTC B2799  ENGINE IMMOBILIZER SYSTEM MALFUNCTION
  1. TRANSPONDER KEY ECU DIAGNOSTIC TROUBLE CODE TABLE 
    Fig 1: Transponder Key ECU Diagnostic Trouble Code Table
    G02607786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. ECM DIAGNOSTIC TROUBLE CODE TABLE 
NOTE: The DTC for the immobilizer system is specified. If the other codes are output, check the DTC table of the engine control system.
Fig 2: ECM Diagnostic Trouble Code Table
G02607787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002