Code Definition

C1758 — Air Suspension Front Height Sensor High (SE) Signal Circuit Short To Battery

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

About C1758

C1758 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 C1758 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) 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.

C1758 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 C1758 is a Ford air suspension code indicating the suspension control module has detected the front height sensor signal circuit shorted to battery voltage. The front height sensor operates within a low voltage signal range supplied by the module, so when the module sees the signal line pulled up to system voltage it knows the circuit has made contact with a power feed rather than reporting genuine ride height. Typical culprits are a chafed harness lying against a battery feed, water or corrosion bridging terminals inside a connector, or incorrect wiring repairs and accessory installations...

Join TaT to view the complete code information and diagnostic details.

Quick Facts