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Home >> Lexus >> 2017 >> NX 300h >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (3 Of 12) >> Hybrid Control System >> DTC P0A1C-715: Drive Motor "B" Control Module; DTC P0A1C-798: Drive Motor "B" Control Module; DTC P0A1C-799: Drive Motor "B" Control Module [10/2014 - 09/2016] >> Description
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DTC P0A1C-715: Drive Motor "B" Control Module; DTC P0A1C-798: Drive Motor "B" Control Module; DTC P0A1C-799: Drive Motor "B" Control Module [10/2014 - 09/2016]: Description

The inverter with converter assembly (MG ECU) monitors its internal operation and detects malfunctions.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A1C-715 Drive Motor "B" Control Module Rear motor resolver angle malfunction:
The difference between the resolver angle for control and estimated resolver angle exceeds the allowable value.
(1 trip detection logic)
  • Inverter with converter assembly
  • Hybrid vehicle transaxle assembly
  • Rear traction motor with transaxle assembly
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
P0A1C-798 Drive Motor "B" Control Module Rear motor resolver REF signal cycle malfunction:
Excitation signal (REF signal) for resolver angle detection cycle malfunction.
(1 trip detection logic)
  • Inverter with converter assembly
  • Hybrid vehicle transaxle assembly
  • Rear traction motor with transaxle assembly
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
P0A1C-799 Drive Motor "B" Control Module Rear Motor resolver REF signal oscillation stop malfunction:
An error is detected when the excitation signal (REF signal) for resolver angle detection is not detected.
(1 trip detection logic)
  • Inverter with converter assembly
  • Hybrid vehicle transaxle assembly
  • Rear traction motor with transaxle assembly
  • Wire harness or connector
Comes on Master Warning Light:
Comes on