Code Definition

C1868 — Air Suspension Rear Inflator Solenoid Output Circuit Short To Ground

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

About C1868

C1868 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 C1868 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.

C1868 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

This code relates to the rear air suspension system. The air suspension control module commands a rear inflator solenoid to admit compressed air into the rear air springs to raise the vehicle and maintain ride height. DTC C1868 sets when the module detects that the rear inflator solenoid output circuit is shorted to ground, drawing excessive current or pulling the controlled output low when it should not be. This is usually caused by the solenoid control wire chafing against a grounded surface, an internally shorted solenoid, or connector contamination. With this code set the rear air spring m...

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