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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 (2 Of12) >> Hybrid Control System >> DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [10/2014 - 09/2016] >> Description
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DTC P0A1B-168: Drive Motor "A" Control Module; DTC P0A1B-795: Drive Motor "A" Control Module; DTC P0A1B-796: Drive Motor "A" Control Module [10/2014 - 09/2016]: Description

The MG ECU, which is built into the inverter with converter assembly, monitors its internal operation and detects malfunctions.

HINT: 

The term "drive motor A" indicates the motor (MG2).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A1B-168 Drive Motor "A" Control Module Motor resolver angle malfunction:
The difference between the resolver angle for control and estimated resolver angle exceeds the allowable limit.
(1 trip detection logic)
  • Inverter with converter assembly
  • Hybrid vehicle transaxle assembly
  • Rear Traction Motor with transaxle assembly (for AWD)
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
P0A1B-795 Drive Motor "A" Control Module 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 (for AWD)
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
P0A1B-796 Drive Motor "A" Control Module 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 (for AWD)
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0A1B-168 Motor (MG2) Revolution
P0A1B-795
P0A1B-796