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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 P0A1C-94: Drive Motor "B" Control Module Unexpected Operation [12/2018 - ] >> Description

DTC P0A1C-94: Drive Motor "B" Control Module Unexpected Operation [12/2018 - ]: Description

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A1C-94 Drive Motor "B" Control Module Unexpected Operation The rear motor generator control ECU (MGR ECU) value received by the hybrid vehicle control ECU differs from the expected value for a certain period of time.
(1 trip detection logic)
Hybrid motor control inverter assembly rear Does not come on Master Warning Light:
Comes on