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Home >> Toyota >> 2017 >> Prius Prime Advanced >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (7 Of 7) >> SFI System >> DTC U019B-87: Lost Communication with Battery Charger Control Module Missing Message [09/2016 - ] >> Monitor Description
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Monitor Description

The ECM and electric vehicle charger assembly send and receive signals via CAN communication.

If a communication error occurs between the ECM and electric vehicle charger assembly, the ECM illuminates the MIL and stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
U019B-87 Lost Communication with Battery Charger Control Module Missing Message All of the following conditions are met for 10.6 seconds or more (1 trip detection logic):
  • Power switch on (IG)
  • Auxiliary battery voltage is 10 V or higher
  • No communication between ECM and electric vehicle charger assembly
  • CAN communication system
  • Electric vehicle charger assembly
  • ECM
Comes on DTC stored SAE Code: U019B