P0A78 on the 2014 Subaru XV CrossTrek
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 11-180-18 | 2018-06-18. Service bulletin. HYBRID MODELS ONLY. This bulletin announces the availability of reprogramming files to optimize the ECM and address DTCs P0A78 and P1C2A. When either of these DTCs is stored, the Hybrid/HEV functions are inoperative. The new logic will prevent damage to the drive motor by adding a fail-safe feature for improved current level control. |
|---|
1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.