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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

ECM DIAGNOSTIC TROUBLE CODE CHART (MIL) 

Fig 1: ECM Diagnostic Trouble Code Chart (MIL)
G02838765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TRANSPONDER KEY ECU (SECURITY INDICATOR LIGHT) DIAGNOSTIC TROUBLE CODE CHART 

Fig 2: Transponder Key ECU (Security Indicator Light) Diagnostic Trouble Code Chart
G02838766Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DIAGNOSTIC TROUBLE CODES (DTC) LIST

DTC Description
DTC 99  Engine Immobilizer System Malfunction
Code 11  is not output
Code 12  is not output
Code 13  is not output
Code 21, 22  are not output
Code 31, 35, 36, 37  is output
Code 32, 33  are output