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Home >> Lexus >> 2006 >> RX 400h AWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (P310) - RX400H - DTC P0A7A-309 Through P0AA7-727 >> DTC P0A94-587 DC / DC Converter Performance >> Description

DTC P0A94-587 DC / DC Converter Performance: Description

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

The MG ECU uses a voltage sensor that is built into the boost converter to detect the high voltage (VL) before it is boosted. The ECU also uses a battery smart unit to detect HV battery voltage (VB).

DTC DETECTION CONDITION - TROUBLE AREA CHART

DTC No. INF Code DTC Detection Condition Trouble Area
P0A94 587 Voltages from HV battery voltage (VB) sensor and boost converter voltage (VL) sensor deviate
  • w/ converter inverter assembly (MG ECU)
  • Battery smart unit