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 MANUALSTOYOTA2012PRIUS THREEREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLELECTRONICALLY CONTROLLED BRAKE SYSTEM (EXCEPT PLUG-IN) (DIAGNOSTIC CODES & SYMPTOM TESTS)ELECTRONICALLY CONTROLLED BRAKE SYSTEMDTC C1440/98: UNUSUAL BANK ANGLE DETECTEDPROCEDURE
2012 Toyota Prius Three
DTC C1440/98: Unusual Bank Angle Detected: Procedure
2012 Toyota Prius ThreeSECTION Procedure
- CHECK DTC
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
- Perform a road test.
- Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR
.
Result
Result Proceed to DTC (C1440/98) is output A DTC (C1440/98) is not output B Yaw rate and acceleration sensor DTC is output C
B → END
C → See step 3
A: Go to next step
- CLEAR DTC
- Clear the DTCs. Refer to DTC CHECK / CLEAR
.
HINT:
- If the skid control ECU determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440/98 while VSC operation is temporarily disabled.
- It is not a malfunction if the system and sensor circuits are normal and if the normal VSC operation resumes.
NEXT → END
- Clear the DTCs. Refer to DTC CHECK / CLEAR
.
- REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to DIAGNOSTIC TROUBLE CODE CHART
RENDER: 1.0x
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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.