DTC P0A2B
DTC P0A2B: Traction Motor Temperature Sensor Circuit Range/Performance
General Description
The power control unit (PCU) monitors the traction motor temperature sensor value to prevent malfunction of traction motor due to heat generation. If the traction motor temperature sensor voltage is excessively high for a set time, the motor control module in the PCU detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 2.5 seconds or more |
| DTC Type | Two drive cycles, MIL on, POWER SYSTEM indicator on |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage | 8 V | - |
Malfunction Threshold
The traction motor temperature sensor output voltage [Motor Temperature Sensor Voltage (TRC)] is more than 4.83 V for at least 2.5 seconds.
[ ]: HDS Parameter
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Traction motor temperature sensor failure
- PCU internal failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the motor control module memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC and the freeze data are stored.
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.