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That Info about the steering angle measured at the clock spring leads me to a possible idea for a solution: Of IT would be possible to intersect the Connection between the torque sensor and the actual EPS module/ECU, why not crating a little addon-box, which takes the steering angle via CAN and is between the actual ECU and the torque sensor. It should be a easy logic to simply limit the maximum torque (Sensor voltage) to the equal of 5.9Nm as long as the steering angle is between +/-400° (Just as a example under the assumption that Lock is at +/-445°). This should erase the actual issue and just limit the support to a maximum instead of sending the unit into cut off mode.
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