Code Definition

C1757 — Air Suspension Front Height Sensor High (SE) Signal Circuit Open

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Ford

About C1757

C1757 is a manufacturer-specific chassis diagnostic trouble code recorded for Ford vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1757 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; a signal or supply voltage higher than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1757 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC C1757 is a Ford air suspension code indicating the suspension control module has detected an open circuit on the front height sensor high signal line. The front height sensor reports front ride height to the module, which fills or vents the front air springs to maintain the target height. The module monitors the sensor circuit continuously, and when it sees an open in the signal wiring, a disconnected sensor, or a break in the sensor element, this code sets. When the code is present the module suspends automatic front leveling, displays the air suspension warning, and the vehicle may remai...

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