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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Hybrid Control System - Diagnostic Codes (7 Of 7) & Circuit Tests (1 Of 2)) >> HYBRID CONTROL SYSTEM (for PHEV Model) >> DTC U0111-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message [08/2023 - ] >> Description

DTC U0111-87: Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.

The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the battery ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
U0111-87 Lost Communication with Hybrid/EV Battery Energy Control Module "A" Missing Message The hybrid vehicle control ECU cannot receive signals from the battery ECU assembly
(1 trip detection logic)
  • Battery ECU assembly
  • Hybrid vehicle control ECU
  • Wire harness or connector
Comes on Master Warning:
Comes on
Hybrid Control B SAE Code: U0111