Code P0C30 means too high state of charge (SOC) of the hybrid traction battery – the high-voltage battery is overcharged above the permissible threshold specified by the manufacturer.
Code P0C30 signals that the state of charge of the hybrid traction battery has exceeded the permissible level. The cause may be a fault in the Battery Management System (BMS), defective cells, or a charging problem. To avoid the risk of damage to the high-voltage system, immediately go to a specialized workshop with experience in hybrid repair.
Orange hybrid system warning light illuminated, possible power limitation or complete shutdown of the drivetrain system, inability to charge the battery (regeneration disabled), in some cases the car may not engage EV mode, display of a hybrid system fault message on the dashboard.
Faulty Battery Management System (BMS) module, Defective high-voltage battery cells that incorrectly indicate the charge level, Malfunction of the voltage or temperature sensor in the battery pack, Software error in the ECM (Engine Control Module), Overcharging caused by a faulty regeneration or external charging system, Corrosion or damage to the wiring harness connecting the battery to the BMS/ECM.
Kod P0C35 oznacza niski poziom sygnału w obwodzie czujnika temperatury „F” akumulatora hybrydowego/EV. Czujnik ten odpowiada za monitorowanie temperatury modułów akumulatora – zbyt niskie napięcie wskazuje na usterkę w obwodzie lub samym czujniku.
Based on the systems affected by this code, we will most likely start with:
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.