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.
2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Power Windows DTCS
POWER WINDOWS DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1221 | Driver's Power Window Switch Circuit |
| B1222 | Driver's Door Lock Switch Circuit |
| B1223 | Passenger Power Window Switch Circuit |
| B1224 | Passenger Door Lock Switch Circuit |
| B1225 | Right Rear Power Window Switch Circuit |
| B1226 | Left Rear Power Window Switch Circuit |
| B1231 | Driver's Power Window Jam Protection Limit Switch |
| B1232 | Driver's Power Window Door Jam Protection Pulse Switch |
| B1233 | Passenger Power Window Jam Protection Limit Switch |
| B1234 | Passenger Power Window Door Jam Protection Pulse Switch |
| B1235 | Right Rear Power Window Jam Protection Limit Switch |
| B1236 | Right Rear Power Window Jam Protection Pulse Switch |
| B1237 | Left Rear Power Window Jam Protection Limit Switch |
| B1238 | Left Rear Power Window Jam Protection Pulse Switch |
Factory Service Tools
Use the Manual With the Right Hardware
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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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