LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2012 >> IS 250 Base, AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Stability Control System (Diagnostic Codes & Symptom Tests) >> Vehicle Stability Control System >> DTC C1440: Unusual Bank Angle Detected >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1440: Unusual Bank Angle Detected: Procedure

  1. CHECK DTC 
    1. Clear the DTC. Refer to DTC CHECK / CLEAR .
    2. Perform a road test.
    3. Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC (C1440) is output A
      DTC (C1440) is not output B
      Yaw rate and acceleration sensor DTC is output C

    B → END 

    C → See step   3 

    A: Go to next step 

  2. CLEAR DTC 
    1. Clear the DTC. 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 while VSC operation is temporarily disabled.

    NEXT → END 

  3. REPAIR CIRCUIT INDICATED BY OUTPUT DTC. Refer to  DIAGNOSTIC TROUBLE CODE CHART