Code Definition

C1767 — Air Suspension Rear Height Sensor Low Signal Circuit Short To Battery

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

About C1767

C1767 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 C1767 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 lower 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.

C1767 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 C1767 is a Ford specific chassis code for the rear height sensor circuit in the four wheel air suspension system found on the Expedition, Lincoln Navigator, and related models. The rear height sensor returns a variable voltage between roughly 0.5V and 4.5V that tells the air suspension control module the current rear ride height. C1767 sets when the module detects the rear height sensor signal pulled up to battery voltage, indicating the signal wire is shorted to a power feed somewhere in the harness or the sensor has failed internally. When the code is set the module suspends automatic re...

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