Problem: When this vehicle came into the shop, the DLC was on and the tech pulled DTCs C0460 – Steering Angle Sensor and C056D 39 – ECU Hardware Performance Internal Electronic Failure. The Tech performed the TSB 07-02-32-009 to update the EBCM and PSCM. After the flash, the Tech could not calibrate the steering sensor.
Details: The tech checked power and grounds to the sensor to see if there was a return signal.
There was no return signal. The most likely cause would be a faulty sensor or a wiring issue.
Confirmed Repair: The tech found a poor connection at the PSCM module and repaired it. He also replaced the power steering control module with a used one. After those repairs, the vehicle started operation normally with no codes.