Hard Turn at Low Speed on Malibu / Sonata – EPS Torque Sensor Wear

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If your Chevrolet Malibu or Hyundai Sonata steers fine on the highway but fights you every time you pull into a parking space, the problem is rarely the tires. These cars use electric power steering, so there is no pump, no reservoir and no fluid to blame, and the usual failure is a worn torque sensor inside the column that stops telling the assist motor how much help you actually need at low speed. The symptom is so specific that it points straight at the sensor before any part gets ordered.

How it shows up

The wheel is heavy only at parking-lot speeds and feels normal once the car rolls above a walking pace.
The stiffness is worse when the engine is first started, then slightly better after several minutes of driving.
There is no power steering fluid to check on these cars, yet the effort rises and falls with no leak to explain it.
The EPS warning light on the dash may flicker or stay on, especially after a battery disconnect.
Assist feels uneven mid-turn, as if the motor helps in small bursts rather than smoothly.
The steering wheel does not return to center as freely as it used to in a slow corner.
The complaint appeared gradually over months, not after a bump, a pothole or a collision.
A reset or relearn temporarily improves the feel, then wear brings the heaviness right back.

Why the assist fades at low speed

The torque sensor sits between the steering wheel shaft and the assist motor, and its internal contact or sensor trace wears over high mileage. Because low-speed parking is the design point where the motor does the most work, that wear appears there first, long before the sensor fails outright.

A low or unstable battery voltage is the other common mimic. The EPS module limits assist to protect itself when voltage sags, which makes a perfectly healthy column feel heavy. Aftermarket wheels or much larger tires can also raise the baseline effort the sensor was calibrated for, masking a borderline sensor, and a skipped calibration after column work leaves the module guessing.

How to confirm it

Read the EPS module codes with a scanner that covers chassis and body systems, since torque sensor or calibration faults usually set a stored code even when the light is off.
Monitor the torque sensor data stream while turning the wheel slowly in a parking lot; a jumpy or stuck value confirms wear.
Check battery state and charging voltage first, because weak voltage mimics a heavy wheel on every EPS car, including the Honda Civic.
Compare effort left versus right with the car stationary and the engine running, because a one-sided bias points to sensor bias rather than tire pressures.
Drive the car at speed: if highway steering feels normal, the rack, suspension and alignment are likely fine and the column sensor is the focus.
Safety note: do not disconnect the EPS motor connector with the ignition on, because live module connectors can set hard codes that require a scanner to clear and may leave the car with no assist until reset.

When to replace

A worn torque sensor is usually serviced with the column assembly or the sensor unit, depending on platform availability; check what your parts supplier lists for the Malibu or Sonata.
Always perform the calibration or relearn procedure after the part goes in, because a new sensor without relearn will still feel off.
If the battery is old or voltage sags, replace the battery before condemning the sensor, since voltage drops create the same symptom.
Align the car if the steering wheel sits off-center, because EPS systems tie assist feel to steering angle data.
Compare a remanufactured column against a new sensor-only option before ordering, since pricing and warranty vary.