Electric power steering is basically the ECU determining how much power steering is needed. So, when there is an issue with it, the vast majority of issues come from the motor.
However, the shuddering could be a faulty sensor that is telling the motor incorrect data. So, we need to do two things to start. First are there any codes? Here is a guide that will help:
Next, we need to use a scan tool and monitor the steering angle sensor.
Basically, you need to point the wheel so that it is going straight, and the angle sensor should be close to 0 degrees. Then you need to turn slowly from lock to lock and the number should move steady and smoothly.
If it jumps rapidly then the angle sensor is faulty.
I attached some info below on this system.
If all this checks out, then I would replace the motor. Let me know what you find, and we can go from there.
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Monday, February 21st, 2022 AT 6:09 AM