Code Definition

U2501 (60) — Communication Fault Between ABS and Transmission Control Module (TCM)

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

About U2501

U2501 is a generic (obd-ii standard) network communication diagnostic trouble code recorded for Ford vehicles. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

Because U2501 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

DTC U2501 is a manufacturer specific network code set when the ABS module and the Transmission Control Module detect invalid, corrupted, or implausible serial data being exchanged over the CAN bus between them. Both modules monitor the integrity, structure, and timing of the messages they share, such as wheel and vehicle speed and torque related data, and log this fault when the expected communication is present but fails validity checks. This indicates a data integrity problem on the link between the two modules rather than a complete loss of communication. Symptoms can include transmission s...

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