Code Definition

C1773 — Air Suspension Vent Solenoid Output Circuit Short To Ground

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

About C1773

C1773 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 C1773 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

C1773 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 C1773 is a Ford specific chassis code for the vent solenoid output circuit in the four wheel air suspension system on the Expedition, Lincoln Navigator, and related models. The vent solenoid sits on the compressor and drier assembly and discharges system air when energised, allowing the module to lower the vehicle and balance ride height. C1773 sets when the air suspension control module detects the vent solenoid output circuit shorted to ground, which can hold the solenoid on continuously or drive excessive current through the module output stage. Depending on how the circuit fails, the v...

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