Code Definition

C1772 — Air Suspension Vent Solenoid Output Circuit Short To Battery

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

About C1772

C1772 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 C1772 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.

C1772 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 C1772 is a Ford specific chassis code for the vent solenoid output circuit in the four wheel air suspension system used on the Expedition, Lincoln Navigator, and related models. The vent solenoid on the compressor and drier assembly releases air from the suspension when energised, and the air suspension control module switches the solenoid by controlling its output circuit. C1772 sets when the module detects battery voltage on the vent solenoid output at a time when it should not be present, indicating the circuit is shorted to a power feed or the driver stage has failed. When this code is...

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