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Pinpoint Test K : U0402, U101A: Notes

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

DTC Fault Trigger Condition-PCM 

DTC Description Fault Trigger Conditions
U0402 Invalid Data Received from TCM The PCM sets this DTC if data messages from the TCM over the HS1-CAN are missing.
U101A Lost Communication With TCM - Multiple Bus The PCM sets this DTC if data messages from the TCM over the HS-CAN1 are missing.

Normal Operation and Fault Conditions 

REFER to: Communications Network - Overview .

Possible Sources 

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