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DTC U0151 - Lost Communication With Restraints Control Module

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2019 Ford Transit-350 HD, 2019 Ford Transit-350, 2019 Ford Transit-250, 2019 Ford Transit-150, and 2019 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION U0151 - LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE

Description:  This DTC sets when the PCM does not receive the restraints control module (RCM) message within the defined amount of time.
Possible Causes: 
  • CAN circuit
Diagnostic Aids:  Network DTC concerns occur during module to module communication. Refer to the Module Communications Network article, Communication Network DTC Chart to continue diagnosis.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST AE .