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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 DTC check, find the circuit corresponding to the code in the table below and proceed to the appropriate section.

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Circuit Inspection Trouble Area
B1221  Power Window Switch Circuit on Driver Door
  • Power window switch
  • Wire harness
  • Driver door ECU
B1222  Door Lock Switch Circuit on Driver Door
  • Door lock switch
  • Door key lock and unlock switch
  • Wire harness
  • Driver door ECU
B1231  Jam Protection Limit Switch Circuit on Driver Door
  • Jam protection limit switch
  • Wire harness
  • Driver door ECU
B1232  Jam Protection Pulse Switch Circuit on Driver Door
  • Jam protection pulse switch
  • Wire harness
  • Driver door ECU
B2211  Door Closer Motor Malfunction on Driver Door
  • Door closer motor
  • Wire harness
  • Driver door ECU