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Home >> Toyota >> 2012 >> Prius V >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System [Diagnostic Codes (P0A78-121 - P0AA1-233)] >> Hybrid Control System >> DTC P0A94-557: DC / DC Converter Performance >> Description

DTC P0A94-557: DC / DC Converter Performance: Description

For a description of the boost converter. Refer to DESCRIPTION .

If a malfunction occurs in the boost converter, the MG ECU detects it and transmits this information to the power management control ECU (HV CPU).

DTC No. INF Code DTC Detection Condition Trouble Area
P0A94 557 Boost converter fail signal detection (circuit malfunction)
  • Wire harness or connector
  • Inverter cooling system
  • Inverter water pump assembly
  • Hybrid vehicle transaxle assembly
  • Generator cable
  • Motor cable
  • Inverter with converter assembly
  • Cooling fan circuit
  • PCU fuse
  • Power management control ECU
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