Advanced Diagnostics

DTC P15AA (93): Motor Rotor Position Not Learned




General Description
The motor control module (MCM) controls the motor by detecting the rotor position angle using the rotor position sensor. The MCM detects 0 point offset to improve torque accuracy and motor efficiency.

When the 0 point offset detection value is a permissible value or more, or when the detection value is not stable for a specified time, the MCM detects a malfunction and a DTC is stored.




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




Enable Conditions

Malfunction Threshold
One of these conditions occurs.
- Angle detection value is -5.0° or less.
- Angle detection value is +5.0° or more.
- Angle detection value is not stable for at least 15 seconds.

Diagnosis Details

Conditions for illuminating the IMA system indicator
When a malfunction is detected, the I MA system indicator comes on and the DTC and the freeze frame data are stored in the MCM memory.

Conditions for clearing the IMA system indicator
The IMA system indicator will be cleared if the malfunction does not recur during the next trip in which the diagnostic runs.

The IMA system indicator, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.