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Home >> Toyota >> 2025 >> GR86 Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Circuit Tests (1 Of 3) & Diagnostic Codes >> Can Communication System >> DTC U1D00: Continuingly Invalid Authentication Data Received From Gateway; DTC U1D07: Continuingly Invalid Authentication Data Received From ECM/PCM PU-Bus; DTC U1D08: Continuingly Invalid Authentication Data Received From VDC PU-Bus; DTC U1D10: Continuingly Invalid Authentication Data Received From TCM PU-Bus [11/2021 - ] >> Description
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DTC U1D00: Continuingly Invalid Authentication Data Received From Gateway; DTC U1D07: Continuingly Invalid Authentication Data Received From ECM/PCM PU-Bus; DTC U1D08: Continuingly Invalid Authentication Data Received From VDC PU-Bus; DTC U1D10: Continuingly Invalid Authentication Data Received From TCM PU-Bus [11/2021 - ]: Description

DTC No. Detection Item DTC Detection Condition Note
U1D00 Continuingly Invalid Authentication Data Received From Gateway Authentication communication between the central gateway ECU (network gateway ECU) and the control module in which the DTC was detected failed consecutively. Trouble Symptom: 
  1. The warning light of the control module in which the DTC was detected illuminates.
U1D07 Continuingly Invalid Authentication Data Received From ECM/PCM PU-Bus Authentication communication between ECM and the control module in which the DTC was detected failed consecutively. Trouble Symptom: 
  1. The warning light of the control module in which the DTC was detected illuminates.
U1D08 Continuingly Invalid Authentication Data Received From VDC PU-Bus Authentication communication between brake actuator assembly and the control module in which the DTC was detected failed consecutively. Trouble Symptom: 
  1. The warning light of the control module in which the DTC was detected illuminates.
U1D10 Continuingly Invalid Authentication Data Received From TCM PU-Bus Authentication communication between TCM and the control module in which the DTC was detected failed consecutively. Trouble Symptom: 
  1. The warning light of the control module in which the DTC was detected illuminates.