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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2003 Lexus LX 470. 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 out the circuit corresponding to the code in the table below .

DIAGNOSTIC TROUBLE CODE

DTC No. Circuit Inspection Trouble Area
B1221  Power Window Switch Circuit on Driver Door
  • Wire harness
  • Power Window Master Switch
B1222  Door Lock Switch Circuit on Driver Door
  • Door lock switch
  • Door key lock and unlock switch
  • Wire harness
  • Power Window Master Switch
B1231  Jam Protection Limit Switch Circuit on Driver Door
  • Jam protection limit switch
  • Wire harness
  • Power Window Master Switch
B1232  Jam Protection Pulse Switch Circuit on Driver Door
  • Jam protection pulse switch
  • Wire harness
  • Power Window Master Switch