DTC C1440: Steering Angle Sensor Unusual Bank Angle Detected: Procedure

WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC

Clear the DTCs. Refer to DTC CHECK / CLEAR .
Drive the vehicle at a speed of 30 km/h (19 mph) or more, turn the steering wheel, and decelerate the vehicle (depress the brake pedal).

Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR .

HINT:

Drive the vehicle straight on a level road during the road test, and check if DTC 1440 and the yaw rate and acceleration sensor DTC are output again.

Result

Result	Proceed to
DTCs (C1440 and yaw rate and acceleration sensor DTC) are not output	A
DTCs (C1440 and/or yaw rate and acceleration sensor DTC) are output	B

B → See step 2

A → END

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