EPS diagnosis · Bergen County, NJ
A 2013 Hyundai Elantra arrived with electric power-steering faults after prior steering-system work. The steering-angle calibration completed and the codes temporarily cleared, but live data and a returning motor fault showed that the vehicle still had a hardware problem.
Real AutoLab diagnostic case. Customer, registration, VIN, claim, and identifying details have been removed. Vehicle-specific results vary.
What the vehicle showed
ADAS warnings often involve several systems at once. The useful question is not simply whether a calibration can be selected, but whether the vehicle is electrically, mechanically, and electronically ready to complete it.
The vehicle stored C1260 and C2400 in the electric power-steering system.
Steering-angle calibration completed successfully and initially left the system code-free.
The torque-sensor calibration function failed instead of completing normally.
After the steering wheel was moved, the torque data became jumpy, then froze at fixed values while the wheel continued to turn.
Diagnostic path
These are the observations and decisions that separated a calibration attempt from the actual next step.
The SAS calibration completed and both faults cleared. That confirmed the vehicle could communicate with the EPS module and accept the steering-angle procedure, but it did not prove the complete steering system was healthy.
The torque-sensor function would not complete. Live torque readings began near zero, changed abruptly when the wheel was moved, and then stopped updating even as the wheel continued to turn.
Cycling the vehicle and clearing the faults created only a temporary code-free condition. Once the system was loaded through steering movement, C2400 returned and the calibration screen could no longer progress normally.
The EPS motor assembly was replaced after the diagnostic evidence pointed away from a simple calibration issue. With the replacement motor installed, the steering system operated normally and the fault condition was resolved.
What this case teaches
A completed steering-angle calibration confirms only that procedure; it does not certify every EPS component.
A temporary code-free state can disappear as soon as the steering system is operated under load.
Live data that jumps, freezes, or stops responding can be more revealing than a fault-code description alone.
Repeated calibration attempts cannot repair a failed EPS motor or another active hardware fault.
Start with the vehicle
Start the assessment with the VIN, fault codes, live-data screenshots, and what steering components were recently repaired or replaced. We’ll review whether the vehicle needs calibration, electrical diagnosis, or a hardware repair first.
