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Home >> Toyota >> 2018 >> Prius Three Touring >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (1 Of 9) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> DTC P0A1B-94: Drive Motor "A" Control Module Unexpected Operation [11/2015 - ] >> Description

DTC P0A1B-94: Drive Motor "A" Control Module Unexpected Operation [11/2015 - ]: Description

The hybrid vehicle control ECU monitors the motor generator control ECU (MG ECU) and stores this DTC when it detects a malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A1B-94 Drive Motor "A" Control Module Unexpected Operation The motor generator control ECU (MG ECU) value received by the hybrid vehicle control ECU exceeds the threshold for a certain period of time.
(1 trip detection logic)
  • Inverter with converter assembly
  • Fusible link block assembly (BATT-MAIN)
  • IGCT-IG fuse
  • IGCT relay
Comes on Master Warning Light:
Comes on