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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/ Central Gateway Ecu) - Diagnostic Codes & Circuit Tests - (Hybrid) >> CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) >> DTC U0129: Lost Communication with Brake System Control Module [10/2015 - ] >> Description

DTC U0129: Lost Communication with Brake System Control Module [10/2015 - ]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0129 Lost Communication with Brake System Control Module No communication from the skid control ECU (brake booster with master cylinder assembly) continues.
  • Power source circuit of skid control ECU (brake booster with master cylinder assembly)
  • Skid control ECU (brake booster with master cylinder assembly) ground circuit
  • Skid control ECU (brake booster with master cylinder assembly) CAN branch wire or connector
  • Skid control ECU (brake booster with master cylinder assembly)
As there is no sub bus monitor ECU for sub bus 15, each ECU detects communication stops and stores DTCs.