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
- The steering column or power steering unit was replaced, or a wheel alignment was done
- The battery was disconnected, or the sensor or ABS unit was replaced or removed
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.
- ESP and traction control, and sometimes ABS, may not work. The brakes still work, but without electronic help — on slippery roads brake smoothly and don’t accelerate hard.
- After repairs the steering angle sensor often needs calibrating with a scan tool.
- If the wheel is straight and the car drives straight but the scan tool shows an angle well away from zero, the sensor is off and needs calibrating.
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
The code can come from the ESC unit or the electric power steering unit — check which unit it was read from. This is the Hyundai and Kia meaning. On other makes this number means something else: if your car isn’t a Hyundai or Kia, change the make at the top.
Source: Kia TSB CHA084 (C-MDPS: Optima, Sorento, Soul, Forte, Rio, Sportage), static.nhtsa.gov
The explanation comes from the error code reference in the AvtoElektrik PRO app.