A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- A rack with a different part number was fitted
- The rack or unit was replaced and not programmed
What you can do yourself
- The power steering may switch off — the steering will get very heavy, especially at low speed. If this happens while driving, hold the wheel with both hands, slow down and stop in a safe place.
- The code usually appears after the steering rack or unit is replaced: the new part is programmed with a dealer-level scanner and set up.
- Compare the new rack’s part number with the one for your VIN: per a GM bulletin a rack with a different number sets this code.
Stop and don’t drive on if:
- The red brake light is on, or the brake pedal feels soft or sinks
- The steering became very heavy, or the car pulls to one side when braking
This is the GM meaning (Chevrolet, Cadillac, GMC). On other makes this number means something else: if your car isn’t made by GM, change the make at the top.
Source: GM PIT5063C (static.nhtsa.gov)
The explanation comes from the error code reference in the AvtoElektrik PRO app.