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Pinpoint Test Ar : DTC U0257:00: Notes

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic Overview 

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.

Normal Operation and Fault Conditions 

The ACM, FCIM and APIM communicate with the FCDIM through the I-CAN.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0257:00 Lost Communication With Front Controls/Display Interface Module: No Sub Type Information Set by the ACM, audio DSP module and FCIM when network messages are missing from the APIM for more than 5 seconds with the ignition in RUN.
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