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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To reduce the unnecessary exchange of ECM, check that a trouble occurs with the original ECM at the time of exchanging ECM and the trouble will disappear with a new ECM.
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC (1) Description
B2795/99 (2) Unmatched Key Code
B2796/99  No Communication In Immobilizer System
B2797/99  Communication Malfunction No. 1
B2798/99  Communication Malfunction No. 2
(1) Four-digit "B" code is displayed on scan tool. Two-digit code is output by flashes of the malfunction indicator light. Codes listed in this table are only for testing covered in this article. Perform appropriate test under DIAGNOSTIC TESTS .
(2) For 2003 models, DTC is renumbered to DTC P0513/99.