Code Definition

U0151 — Lost Communication With Restraints Control Module

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

About U0151

U0151 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 U0151 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 Powertrain Control Module (PCM), Body Control Module (BCM), and other networked modules communicate with the Restraints Control Module (RCM) over the Controller Area Network (CAN) to exchange status information for airbag and seatbelt pretensioner systems. DTC U0151 is set when a module does not receive valid CAN messages from the RCM within a calibrated time while the ignition is in the RUN position. This indicates a loss of network communication or a power or ground fault preventing the RCM from operating on the CAN network.

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