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.
2006 Lexus IS 250 AWDFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Table
FOUR WHEEL DRIVE CONTROL SYSTEM
DIAGNOSTIC TROUBLE CODE TABLE
| DTC No. | Detection Item | Trouble Area | Reference |
|---|---|---|---|
| C1241/94 | Low Power Supply Voltage |
|
INSPECTION PROCEDURE |
| C1296/96 | ABS Malfunction |
|
INSPECTION PROCEDURE |
| C1297/97 | Steering Angle Sensor |
|
INSPECTION PROCEDURE |
| C1298/98 | Linear Solenoid Circuit |
|
INSPECTION PROCEDURE |
| C1299/99 | Cancellation of 4WD Control |
|
INSPECTION PROCEDURE |
| U0073/86 | Control Module Communication Bus OFF |
|
INSPECTION PROCEDURE |
| U0100/85 | Lost Communication with ECM / PCM "A" |
|
INSPECTION PROCEDURE |
| U0122/83 | Lost Communication with Vehicle Dynamics Control Module |
|
INSPECTION PROCEDURE |
| U0126/84 | Lost Communication with Steering Angle Sensor Module |
|
INSPECTION PROCEDURE |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.