DTC Advanced Diagnostics: P0A11 (3.0L Engine)
DTC P0A11: DC-DC Converter Activation Circuit Malfunction
General Description
If the DC_STS signal is not received from the DC-DC converter within a specified duration, the powertrain control module (PCM) detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | 5 seconds or more |
| DTC Type | Two drive cycles, MIL off |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Elapsed time after the vehicle is turned to the ON mode | 0.5 second | - |
| Vehicle | ON mode | |
| Other | LIN communication is OK | |
[ ]: HDS Parameter
Malfunction Threshold
The DC_STS signal is not received from the DC-DC converter within 5 seconds.
Possible Cause
- DC-DC converter DC_STS line failure
- DC-DC converter failure
- PCM internal circuit 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 PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC, the freeze data, and the on-board snapshot are stored. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.