DTC P0C0C
DTC P0C0C: Traction Motor Inverter Power Supply Circuit Low
General Description
The power control unit (PCU) monitors the IGA voltage supplied to the PCU according to the voltage detected at the IGA voltage input part. If the IGA voltage is out of a specified value for a specified 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 | 2.0 seconds or more |
| DTC Type | One drive cycle, MIL on, POWER SYSTEM indicator on |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| 12 volt battery voltage | 10 V | - |
| Vehicle | ON mode | |
Malfunction Threshold
The IGA voltage is less than 0.65 V for at least 2.0 seconds.
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.
- IG HLD1 relay circuit IGA line open
- IG HLD1 relay circuit IGHLD line open
- IG HLD1 relay circuit IGAMONI line open
- IG HLD1 relay circuit IGA line short to ground
- IG HLD1 relay circuit failure
- Battery condition monitor module failure
- PCU internal failure
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 motor control module 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.