Why is the electric power steering wheel slow and weak to return to center?

[StReed]

Electric power steering wheel returning slowly and weakly is caused by changes in wheel alignment parameters and damage to the steering gear. A car's wheel is an assembly consisting of a tire and a rim. However, due to manufacturing reasons, the mass distribution of various parts of this assembly cannot be perfectly uniform. When the wheel rotates at high speed, it forms a dynamic imbalance, causing phenomena such as wheel wobbling and steering wheel vibration during driving. Solutions for steering wheel not returning to center: 1. Adjust wheel alignment: Generally, when a vehicle exhibits the phenomenon of the steering wheel not returning to center, the first solution that comes to mind is adjusting the wheel alignment. Wheel alignment refers to the relative positional relationship between the wheels and the chassis (wheels, steering knuckles, front axle, etc.). If the wheel alignment parameters change, it can lead to issues such as the steering wheel not returning to center, heavy steering, steering pull, and tire wear. 2. Replace the steering gear: If the steering wheel still does not return to center after adjusting the wheel alignment, then the cause can be ruled out as wheel alignment. After eliminating wheel alignment, the most likely cause is the steering gear. When the steering gear malfunctions and its reverse efficiency decreases, the steering wheel will have difficulty returning to center.

[DeMargaret]

A friend of mine recently had this exact issue with their car, and I did some research on it. When the electric power steering wheel returns slowly and feels weak, it's mostly due to problems with the sensor or the motor. The torque sensor is responsible for detecting steering force, and if it's dirty, damaged, or improperly calibrated, the system reacts sluggishly, resulting in slow return. The electric power steering system relies on the motor for operation, and insufficient voltage or aging wiring can also cause weak performance—common issues like a low battery or a loose fuse. I recommend paying attention to any unusual sounds while driving and having a technician check the power steering module and wheel alignment during regular maintenance. Prevention is better than dealing with problems afterward. If this issue isn't fixed promptly, it could develop into steering failure, which is especially dangerous at high speeds.

[SanElias]

I'm really into automotive electronics. The weak return of the electric power steering (EPS) is fundamentally due to issues in the EPS control system. Inaccurate torque sensor signals can mislead motor responses, with common faults including short circuits in wiring, motor wear, or outdated software requiring updates. Some vehicle models can display fault codes when connected to an OBD scanner, such as C1500 indicating sensor problems. Additionally, unstable power output, like a failing alternator regulator, is often the culprit. Long-term neglect significantly increases the chance of complete power assist failure. The repair isn't complex but requires professional equipment—DIY attempts risk damaging circuits. Focus on checking sensors and power supply components, and don't skimp on repair costs.

[SadieAnn]

Safety should never be taken lightly. Slow steering wheel return during turns may lead to loss of control, often caused by abnormal operation of the electric power steering system. Dirty sensors, insufficient motor power supply, or misaligned tires can all contribute to the issue. When encountering this situation, I immediately stop driving and send the car to a professional shop for inspection to prevent minor problems from escalating into major accidents. Regular maintenance should focus on cleaning dust to keep circuits clean, and maintaining battery and tire health can also prevent issues. Driving habits are equally important—avoid aggressively turning the steering wheel while stationary to reduce strain. In short, prevention and timely repairs are the safest approach.