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.
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HOMESERVICE MANUALSTOYOTA2006SIENNA FWD V6-3.3L (3MZ-FE)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE DESCRIPTIONSVEHICLE STABILITY CONTROL SYSTEM
2006 Toyota Sienna FWD V6-3.3L (3MZ-FE)
Vehicle Stability Control System
2006 Toyota Sienna FWD V6-3.3L (3MZ-FE)SECTION Vehicle Stability Control System
DIAGNOSTIC TROUBLE CODE CHART
HINT: If a malfunction code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, turn to the respective "DTC No." in the DTC chart.
If any of U0121/94, U0123/62, U0124/95 and U0126/63 are display, inspect the can communication system.
C0200/31-C1224/44:
C1225/25-C1381/97:
HINT: If a malfunction code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, turn to the respective "DTC No." in the DTC chart.
If any of U0121/94, U0123/62, U0124/95 and U0126/63 are display, inspect the can communication system.
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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.