P0A3C on Hyundai
Drive Motor "A" Inverter Over Temperature
P0A3C on Hyundai vehicles indicates drive motor "a" inverter over temperature. Au7o has documented this code across 1 Hyundai model — most commonly on Elantra. The inverter/power electronics driving motor 'A' has exceeded safe operating temperature, forcing a derate to protect the IGBTs/power module.
Common Causes of P0A3C
- •Inverter cooling problem (low coolant, weak pump, air, failed fan)
- •High sustained load
- •Failed inverter cooling components
- •Accurate high-temp reading
P0A3C on Hyundai by Model
Hyundai Elantra(1 issue)
- Hybrid Power Control Unit (HPCU) Overheating (Recall 26V308)2024-2026
The newest Elantra Hybrids are subject to a recall covering the hybrid power control unit, the assembly that houses the inverter and DC-DC converter and manages power flow between the high-voltage battery, the drive motor and the 12V system. The HPCU assembly may overheat. Thermal events in an inverter of this kind typically show first as a hybrid-system warning and a forced power derate, and can end in a loss of drive power; the underlying risk with any overheating high-voltage power electronics is a fire. This affects 2024-2026 Elantra Hybrid vehicles only - it is not a defect of the conventional 2.0L Smartstream Elantra, whose driveline has no HPCU at all.
Looking for P0A3C on a different make?
View P0A3C across all makes →Frequently Asked Questions
What does P0A3C mean on Hyundai?▼
P0A3C stands for "Drive Motor "A" Inverter Over Temperature." The inverter/power electronics driving motor 'A' has exceeded safe operating temperature, forcing a derate to protect the IGBTs/power module. On Hyundai specifically, this code is documented across 1 model.
What causes P0A3C on Hyundai vehicles?▼
Common causes on Hyundai: Inverter cooling problem (low coolant, weak pump, air, failed fan), High sustained load, Failed inverter cooling components, Accurate high-temp reading. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0A3C on a Hyundai?▼
Repair costs vary widely depending on the root cause and specific Hyundai model.
Which Hyundai models have P0A3C documented?▼
Au7o has documented P0A3C on 1 Hyundai model: Elantra.