C1728 on Ford
EPS Motor Over-Temperature
C1728 on Ford vehicles indicates eps motor over-temperature. Au7o has documented this code across 1 Ford model — most commonly on Expedition. This chassis code relates to an over-temperature condition in the electric power steering (EPS) motor, the electric motor that provides power-assist for the steering. The steering control module monitors the motor's temperature (directly or by estimating it from current draw and time), and when it gets too hot the system sets this code and temporarily reduces or cuts steering assist to protect the motor from heat damage. Drivers often notice the steering becoming heavy until the system cools down. It frequently follows prolonged hard steering, but can also indicate an electrical fault that makes the motor draw excessive current. Typical repair costs on Ford range from $300 to $1,500, depending on the specific model and root cause.
Common Causes of C1728
- •Prolonged hard or full-lock steering causing thermal overload
- •Faulty or shorting EPS motor drawing excess current
- •Low system voltage forcing higher current draw
- •Faulty temperature sensor or estimation circuit
- •Wiring or connector fault in the EPS motor circuit
- •Failing EPS control module
- •Mechanical steering bind increasing motor load
C1728 on Ford by Model
Ford Expedition(1 issue)
- Air Suspension Compressor Failure and Rear Sag2003-2017
The 2003-2017 Ford Expedition with optional air suspension (standard on Eddie Bauer, King Ranch, Platinum, and EL/MAX trims) suffers from air suspension compressor failure, air spring leaks, and ride height sensor malfunctions. The compressor, located under the vehicle, is exposed to road debris, salt, and moisture which degrades the motor and valves. When air springs develop leaks, the compressor runs continuously trying to maintain ride height, leading to premature burnout. RepairPal estimates compressor replacement between $666 and $724, though dealer pricing can reach $1,200. NHTSA has received hundreds of complaints regarding air suspension failures. Strutmasters.com notes that 2007-2011 Expedition and Navigator share the same air suspension system and failure patterns. Many owners opt for air-to-coil spring conversion kits as a permanent, lower-cost solution.
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View C1728 across all makes →Frequently Asked Questions
What does C1728 mean on Ford?▼
C1728 stands for "EPS Motor Over-Temperature." This chassis code relates to an over-temperature condition in the electric power steering (EPS) motor, the electric motor that provides power-assist for the steering. The steering control module monitors the motor's temperature (directly or by estimating it from current draw and time), and when it gets too hot the system sets this code and temporarily reduces or cuts steering assist to protect the motor from heat damage. Drivers often notice the steering becoming heavy until the system cools down. It frequently follows prolonged hard steering, but can also indicate an electrical fault that makes the motor draw excessive current. On Ford specifically, this code is documented across 1 model.
What causes C1728 on Ford vehicles?▼
Common causes on Ford: Prolonged hard or full-lock steering causing thermal overload, Faulty or shorting EPS motor drawing excess current, Low system voltage forcing higher current draw, Faulty temperature sensor or estimation circuit, Wiring or connector fault in the EPS motor circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix C1728 on a Ford?▼
Repair costs on Ford range from $300 to $1,500, depending on the specific model and root cause.
Which Ford models have C1728 documented?▼
Au7o has documented C1728 on 1 Ford model: Expedition.