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Home >> Toyota >> 2012 >> Prius Three >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System (Except Plug-In) (Diagnostic Codes & Symptom Tests) >> Meter / Gauge System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU >> Description

DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU: Description

The combination meter assembly (No. 3 meter circuit plate) communicates with the ECM via the CAN communication system (CAN No. 1 Bus).

DTC No. DTC Detection Condition Trouble Area
U0100 When IG voltage is 9.5 V or more and the following condition is detected:
  1. No communication with ECM continues for 2 seconds or more
  • ECM
  • CAN communication system
  • Combination meter assembly (No. 3 meter circuit plate)
U0129 When IG voltage is 9.5 V or more and the following condition is detected:
  1. No communication with skid control ECU continues for 3 seconds or more
  • Skid control ECU
  • CAN communication system
  • Combination meter assembly (No. 3 meter circuit plate)
U0131 When IG voltage is 9.5 V or more and the following condition is detected:
  1. No communication with power steering ECU continues for 3 seconds or more
  • Power steering ECU
  • CAN communication system
  • Combination meter assembly (No. 3 meter circuit plate)
U0142 When IG voltage is 9.5 V or more and the following condition is detected:
  1. No communication with main body ECU continues for 3 seconds or more
  • Main body ECU
  • CAN communication system
  • Combination meter assembly (No. 3 meter circuit plate)
U0151 When IG voltage is 9.5 V or more and the following condition is detected:
  1. No communication with center airbag sensor assembly continues for 10 seconds or more
  • Center airbag sensor assembly
  • CAN communication system
  • Combination meter assembly (No. 3 meter circuit plate)