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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

Wireless door lock control system 

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Detection Item Trouble Area
B1242  Wireless Door Lock Tuner Circuit Malfunction
  • Inner rear view mirror (door control receiver)
  • Theft warning ECU
  • Wire harness