P0A10DC/DC Converter Status Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- The status signal from the DC/DC converter to the hybrid control module sits above its valid range, typically because the line is shorted to a voltage source, its ground or pull-down path is open, or the converter drives the output high after an internal failure. The converter supplies the 12 V system from the traction battery, and its self-diagnosis reports problems over this status path. No manufacturer documents P0A10 publicly in an official source; older lists that call it a hybrid battery voltage sense circuit are wrong for today's J2012. Siblings: P0A08 is the general status fault, P0A09 the low signal. A converter that stops working shows up as warning lights and a falling 12 V voltage until the hybrid system shuts down.
- What you may notice
- Hybrid system or battery warning light on
- 12 V battery voltage falls while driving
- Possible shutdown of the hybrid system if the 12 V battery runs flat
- Likely causes
- PossibleStatus line shorted to 12 V or another supply
- PossibleOpen ground or signal return at the converter connector
- PossibleDC/DC converter internal fault driving the status output high
- RareFaulty input stage in the hybrid control module
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.