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Home >> Lexus >> 2008 >> RX 400h FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 160 (Hybrid Vehicle Control (P310) - RX400H - DTC P0A37-258 Through P0A79-812) >> DTC P0A78-504 Drive Motor "A" Inverter Performance >> Description

DTC P0A78-504 Drive Motor "A" Inverter Performance: Description

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the description of the inverter. (See DTC P0A78-266 DRIVE MOTOR "A" INVERTER PERFORMANCE: DTC P0A78-267 DRIVE MOTOR "A" Inverter Performance  )

DIAGNOSTIC TROUBLE CODE CHART

DTC No. INF Code DTC Detection Condition Trouble Area
P0A78 504 Motor inverter overvoltage signal detection (overvoltage by HV transaxle assembly malfunction)
  • Wire harness or connector
  • HV relay assembly
  • w/ converter inverter assembly (MG ECU)
  • Rear traction motor w/ transaxle assembly
  • Hybrid vehicle transaxle assembly