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Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Power Steering System - Diagnostic Codes & Circuit Tests >> Power Steering System >> DTC U0129-42: Lost Communication with Brake System Control Module; DTC U0293-41: Lost Communication with Hybrid Control Module [06/2015 - ] >> Description
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DTC U0129-42: Lost Communication with Brake System Control Module; DTC U0293-41: Lost Communication with Hybrid Control Module [06/2015 - ]: Description

The power steering ECU assembly receives signals from the EV control ECU and skid control ECU (brake booster with master cylinder assembly) via the CAN communication system.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
U0129/42 Lost Communication with Brake System Control Module Lost communication with skid control ECU (brake booster with master cylinder assembly)
  • CAN communication system
  • Skid control ECU (brake booster with master cylinder assembly)
On After normal confirmation -
U0293/41 Lost Communication with Hybrid Control Module Lost communication with EV control ECU
  • CAN communication system
  • EV control ECU
On After normal confirmation -