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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (5 Of 5) & Symptom Tests >> Airbag System >> DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [12/2022 - 03/2023] >> Description

DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message [12/2022 - 03/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate DTC Output from Priority Test Mode / Check Mode
U0129-87 Lost Communication with Brake System Control Module "A" Missing Message Communication stop occurs between the airbag ECU assembly and skid control ECU continuously for approximately 2 seconds or more.
  • CAN communication system
  • Airbag ECU assembly
  • No. 2 skid control ECU (brake actuator assembly)
 Comes on SRS Airbag B Does not apply to test/check mode
U023A-87 Lost Communication with Image Processing Module "A" Missing Message Communication stop occurs between the airbag ECU assembly and forward recognition camera continuously for approximately 10 seconds or more.
  • CAN communication system
  • Airbag ECU assembly
  • Forward recognition camera
 Comes on SRS Airbag B Does not apply to test/check mode
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