What are the causes of the C2402 motor failure in the All New Santa Fe?
3 Answers
The causes of the C2402 motor failure in the All New Santa Fe are as follows: Motor power supply voltage is too high or too low: If the power supply voltage is too low, it will reduce the motor torque, make starting difficult, and also cause the running motor to slow down and increase current, among other issues. Three-phase power supply voltage imbalance: Short circuits, open circuits, grounding, poor contact on the line, or faults in the power transformer itself can all cause a three-phase power supply voltage imbalance. If the three-phase unbalanced voltage connected to the motor exceeds a 5% deviation from the average value, strong vibrations or three-phase current imbalances may occur. Motor operation with a missing phase: Motor operation with a missing phase, also known as open-phase operation, can be caused by broken power supply wires, blown fuses or fuse links in one phase, burnt electrical connections in one phase, poor contact in one phase of the switch, oxidized and burnt motor terminal connections, or faults in the motor winding such as open circuits and short circuits.
As a seasoned car repair veteran, let me talk about the causes of the Hyundai Santa Fe C2402 motor failure. This is usually a common issue with the electric power steering system, where the core problem may lie in internal wear of the motor itself—such as worn-out brushes leading to poor current transmission, which then triggers the system to report a fault code. It could also be due to loose wiring connections, where vibrations on bumpy roads cause connectors to detach, affecting signal transmission. Sometimes, the control module overheating or unstable battery power supply, with fluctuating voltage, can force the motor to shut down. I believe this issue should be addressed early, as heavy steering can be quite dangerous while driving. During regular maintenance, pay attention to checking the lubrication of the steering system and avoid sharp turns or leaving the car parked for extended periods, as this can help extend the motor's lifespan.
I've been driving for over a decade and only encountered the C2402 fault code, which was mostly caused by improper vehicle usage. Constantly making short trips in the city leads to frequent motor starts, overheating, and accelerated aging. Not performing regular steering maintenance allows dust to clog the cooling vents, speeding up wear. Once, I kept the AC running after parking, causing low battery voltage and unstable power supply, which triggered a motor error. Now I remind my friends: don't skip maintenance for convenience, remember to regularly check the chassis waterproof seals to prevent water from splashing into circuits and causing shorts. Simply put, care for your car like you would your own body—pay attention to the details.
