P0A13
DC/DC Converter Enable Circuit High
- Severity
- High
- Driving
- Drive only to a garage
The DC/DC converter enable circuit is reading high - typically a short to voltage or a lost earth. The module cannot control when the converter runs, so it cannot guarantee the 12 volt system is being charged. Depending on where the fault is, the converter may be stuck off, or stuck on when it should be resting.
Possible causes
- CommonWiring a short to voltage or a lost earth on the enable circuit
- CommonCorroded or water-damaged connector
- CommonFailed DC/DC converter input stage
- PossibleBlown fuse
- RareFailed driver inside the control module
What you might notice
- 12 volt battery going flat, or conversely being overcharged
- Vehicle refusing to power up
- Multiple unrelated warning lights
- Vehicle powering down unexpectedly
What to check, in order
- Measure the 12 volt system voltage powered up and again after shutdown. It should be around 14 volts running and should stop being driven once the vehicle is off.
- Check the 12 volt battery first - it is the most common cause of scattered hybrid system codes.
- Unplug the converter's control connector and check whether the high reading persists at the harness.
- Check the enable circuit fuse and the wiring back to the module.
- Stop at the 12 volt system. Anything further needs the manufacturer's high-voltage procedure.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx