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Home >> Toyota >> 2016 >> Prius Two >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Power Steering System - Diagnostic Codes & Circuit Tests >> Power Steering System >> DTC U0129: Lost Communication with Brake System Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module; DTC U1110: Lost Communication with Intuitive Parking Assist Module [11/2015 - 07/2020] >> Description
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DTC U0129: Lost Communication with Brake System Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U0293: Lost Communication with Hybrid Control Module; DTC U1110: Lost Communication with Intuitive Parking Assist Module [11/2015 - 07/2020]: Description

The power steering ECU assembly receives signals from the skid control ECU (brake booster with master cylinder assembly), forward recognition camera (w/ Toyota Safety Sense P), hybrid vehicle control ECU, and clearance warning ECU assembly (w/ Simple Advanced Parking Guidance System) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
U0129 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)
EPS warning light: Comes on The ECU judges the system has returned to normal or the power switch is turned on (IG) again -
U023A Lost Communication with Front Camera Module Lost communication with forward recognition camera
  • CAN communication system
  • Forward recognition camera
EPS warning light: Does not come on The ECU judges the system has returned to normal or the power switch is turned on (IG) again w/ Toyota Safety Sense P
U0293 Lost Communication with Hybrid Control Module Lost communication with hybrid vehicle control ECU
  • CAN communication system
  • hybrid vehicle control ECU
EPS warning light: Does not come on The ECU judges the system has returned to normal or the power switch is turned on (IG) again -
U1110 Lost Communication with Intuitive Parking Assist Module Lost communication with clearance warning ECU assembly
  • CAN communication system
  • Clearance warning ECU assembly
EPS warning light: Does not come on The ECU judges the system has returned to normal or the power switch is turned on (IG) again w/ Simple Advanced Parking Guidance System