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🟡 PARTIAL: Hyundai Ioniq 5 800V charging fault — reduced charging speed — Hyundai Ioniq 5 2021 | MyCarFault
🟡 PARTIALLY SOLVED 0% Partially solved · Some fixes work, not all

🟡 Hyundai Ioniq 5 800V charging fault — reduced charging speed

Hyundai Ioniq 5 2021
On This Page: 🔧 All Repairs ⚠️ Avoid These 🔗 Similar Faults
⚡ Quick Summary
Severity Level
Low
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟢 Low Priority

The Ioniq 5 fails to charge at the rated 220kW peak speed on 800V ultra-fast chargers. Charging speed is reduced to 50kW or less. The fault is often caused by the vehicle battery temperature being outside the optimal charging window. Pre-conditioning the battery via the navigation system (setting a charging station as destination) brings the battery to optimal temperature. Some early units had a battery management system software fault — a dealer update resolves this.

Repair / Solution

No confirmed fixes yet. Share yours below.

⚠️ Wrong Diagnosis?

No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Hyundai Ioniq 5 2021 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

🚗 More About This Vehicle

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