Advanced Diagnostics

Advanced Diagnostics - DTC P0A5E (24): U Phase Motor Current Sensor Circuit Low Voltage






General Description
The motor control module (MCM) controls motor output based on the motor current sensor signals. Normally, the motor current sensor has the characteristics shown above. If there is an open in the signal wire, a short to ground, a faulty sensor power supply cable, or a faulty ground wiring harness, the output voltage stays low and out of range. If the input voltage to the MCM is lower than normal, a malfunction is detected and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The MCM input voltage from the U phase motor current sensor is 0.25 V or less for at least 500 milliseconds.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM and the MCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.