Code Definition

U0131 (87) — Lost Communication With Power Steering Control Module

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

About U0131

U0131 is a generic (obd-ii standard) network communication diagnostic trouble code. 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 U0131 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 U0131 indicates lost communication with the Power Steering Control Module. On vehicles with electric power steering, this module controls the steering assist motor and communicates over the CAN network with other modules such as the ABS and engine control. The code sets when valid messages from the Power Steering Control Module are not received within a calibrated time. Because steering assist depends on this module, a loss of communication can reduce or disable power assist, making the steering heavy, and the driver will usually see a power steering warning along with possible ABS or stab...

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