Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Power Window Control System DTCS
POWER WINDOW CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1221 | POWER WINDOW SWITCH CIRCUIT ON DRIVER DOOR |
| DTC B1223 | POWER WINDOW SWITCH CIRCUIT ON PASSENGER DOOR |
| DTC B1226 | POWER WINDOW SWITCH CIRCUIT ON REAR LEFT DOOR |
| DTC B1225 | POWER WINDOW SWITCH CIRCUIT ON REAR RIGHT DOOR |
| DTC B1231, B1232 | JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON DRIVER DOOR |
| DTC B1233, B1234 | JAM PROTECTION LIMIT SWITCH CIRCUIT ON PASSENGER DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON PASSENGER DOOR |
| DTC B1237, B1238 | JAM PROTECTION LIMIT SWITCH CIRCUIT ON REAR LEFT DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON REAR LEFT DOOR |
| DTC B1235, B1236 | JAM PROTECTION LIMIT SWITCH CIRCUIT ON REAR RIGHT DOOR, JAM PROTECTION PULSE SWITCH CIRCUIT ON REAR RIGHT DOOR |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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