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DTC P0A94-587 DC / DC Converter Performance: Description

See the description of the boost converter (see DTC P0A94-442 DC / DC CONVERTER PERFORMANCE  ).

The HV control ECU uses two voltage sensors, VL and VB, to detect voltage levels. The VL sensor that has been built into the boost converter is used to detect the high voltage before it is boosted. The VB sensor that has been built into the battery ECU is used to detect voltage of the HV battery.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. INF Code DTC Detection Condition Trouble Area
P0A94 587 Difference between voltages from HV battery voltage (VB) sensor and boost converter voltage (VL) sensor is large
  • Wire harness or connector
  • Inverter with converter assembly
  • Service plug grip
  • High voltage fuse
  • Battery ECU