Thats the code for main HV Battery,
however you need not to panic, goto a battery shop and ask the tech there to check for 12V Primary battery in the vehicle which is in the rear hatch, Normally the JDM Scrap exported buyers in PK never bother to check for primary 12 V battery life before it starts to throw CEL.
also check for HV battery cooling fan it may be clogged with the dirt / lint within the cabin and battery thermistors are active to cut off over- heating / charging to avoid short circuit
If the primary battery is never changed since purchase it is time you replace it, please