Toyota Repair Problems? Ask a Mechanic for Answers ASAP
You could have a problem with the spiral cable, C1433 is a code for the steering angle sensor circuit. You will also need to perform and alignment and re-calibrate the steering angle sensor.
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Is the steering wheel straight while driving straight?
When the steering wheel is straight what is the reading on the scan tool live data?
Sounds like something is not plugged in all the way, or there is an open in the harness. Do you have access to a wiring diagram?