P0A3C on 2024-2026 Hyundai Elantra (Hybrid, Hybrid Blue, Hybrid SEL Sport, Hybrid Limited) — Drive Motor "A" Inverter Over Temperature
1 vehicles · 1 makes
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Hyundai Elantra · 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.
Common Symptoms
- Hybrid system warning lamp illuminates
- Sudden reduction in available power / limp mode
- Loss of drive power
- Warning message to check the hybrid system
How to Fix
Free recall remedy. Under NHTSA campaign 26V308000 dealers install a software update to the HPCU at no charge - the software manages inverter thermal load rather than replacing hardware. Owners should verify VIN eligibility at nhtsa.gov/recalls and get the update promptly rather than waiting for a symptom, since the campaign is preventive. If the hybrid system warning lamp, a sudden power derate or a burning-electrical smell appears, stop driving and have the car towed rather than continuing.
Sources for this issue (2)
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P0A3C code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0A3C mean?
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.
What are the most common causes of P0A3C?
The most common causes of P0A3C are: Inverter cooling problem (low coolant, weak pump, air, failed fan), High sustained load, Failed inverter cooling components, Accurate high-temp reading. The specific cause varies by vehicle.
How much does it cost to fix P0A3C?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P0A3C?
Au7o has documented P0A3C across 1 vehicle models from 1 manufacturers: Hyundai.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.