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Pinpoint Test C : DTC U0121:00: Notes

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 

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information Sets in the BCM if data messages received from the ABS module over the HS-CAN are missing for 5 seconds or more.

Possible Sources 

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