Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table below and proceed to the appropriate section.
DIAGNOSTIC TROUBLE CODE CHART
| DTC No. | Circuit Inspection | Trouble Area |
|---|---|---|
| B1268 | Back-up communication bus malfunction (between Driver Side J/B ECU and Luggage Room J/B ECU) |
|
| B2402 | Transistor relay overload malfunction |
|
| B2403 | Transistor relay overheat malfunction |
|