Code Definition

C0140 — ABS CAN Communication Malfunction

System: Chassis  |  Type: Generic (OBD-II Standard)  |  Make: Ford

About C0140

C0140 is a generic (obd-ii standard) 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.

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.

Because C0140 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The ABS control module communicates with other vehicle control modules over the Controller Area Network (CAN) bus to exchange wheel speed, brake status, and stability control data. DTC C0140 is set when the ABS module detects a loss of communication, invalid data, or missing CAN frames on the network for a calibrated period of time. The fault may originate in the CAN wiring, the ABS module's own CAN transceiver, or another module on the same network segment failing to communicate. When this code is active the driver typically sees the ABS, stability control, and brake warning lamps illuminated...

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