Code Definition

U0212 — Lost Communication With Steering Column Module (SCM)

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

About U0212

U0212 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 U0212 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 Steering Column Module (SCM) manages steering column functions such as the multifunction stalk switches, ignition status, and steering wheel controls, and it shares this data with the Body Control Module, Powertrain Control Module, and other modules over the CAN data network. DTC U0212 is a generic network code set when a receiving module stops receiving valid CAN messages from the Steering Column Module for a calibrated period while the ignition is on and the rest of the network is communicating. The fault usually means the SCM has gone offline due to loss of power or ground, a CAN wiring...

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