P0A80 on Kia: How to Diagnose & Fix
Replace Hybrid Battery Pack
1 Kia model · 2 documented issues · 2 critical
P0A80 on Kia by model: symptoms, diagnosis and fix
The 27 kWh SK Innovation pouch cells used in the first-generation Soul EV degrade far faster than the industry norm, and — critically — the loss is not linear. Owners tracking state of health with OBD tools report long plateaus followed by cliff-like drops; one documented case lost 15 percentage points of SOH in three months over roughly 4,000 miles. The practical result is a car that quietly stops being usable for its original commute: indicated range falls well below the 93-mile EPA figure, the guess-o-meter becomes erratic, and DC fast-charge sessions taper early. Because Kia's capacity warranty triggers at below 70% SOH, the shape of this degradation curve matters — cars sitting at 72-75% can drop under the threshold quickly, and owners near the end of the warranty term should be measuring, not guessing.
Common Symptoms
- Usable range far below the original EPA rating
- Sudden step-drops in indicated state of health
- Range estimate fluctuates widely between charges
- Charging tapers early / pack will not take a full charge
How to Fix
Log actual SOH with an OBD-II dongle and a Soul EV-aware app (Soul Spy / Torque with EV PIDs) and keep dated screenshots. If SOH is below 70% while inside the 10yr/100k HV battery warranty, request a warranty pack replacement — Kia replaces the cells while reusing the case, BMS, and harness, and replacement packs have shipped with later-MY cells that hold up better. Out of warranty, third-party EV battery specialists can replace individual failed modules for far less than a full pack. Slow degradation by charging to 80% for daily use and avoiding repeated DC fast charges in hot weather.
Sources for this issue (4)
Kia recalled approximately 2,689 Soul EVs because an internal short circuit can develop between the anode and cathode inside cells of the E400 high-voltage battery pack, and that short can start a fire while the vehicle is being driven. Kia attributes it to abnormally excessive precipitate forming inside the cells; three thermal incidents were reported. The population is unusual and easy to miss: it covers 2018-2019 Soul EVs built 7/3/2017 through 9/28/2018 with the factory E400 pack, AND 2015-2017 Soul EVs that had their original pack replaced under warranty with an E400 unit — so a first-generation car that already got a 'good' battery can be the affected one. Warning signs owners see before anything dramatic are charging that never completes, range that fluctuates or drops, and the EV warning lamp.
Common Symptoms
- Charging never completes / stops short of full
- Range drops or fluctuates unpredictably
- EV system warning light illuminated
- Reduced power / limp-home mode
- Burning or chemical odor from under the vehicle
How to Fix
Have the dealer install the recall software free of charge. The software monitors for abnormal cell voltage; if it detects the pre-short condition it lights the EV warning lamp, caps charging at 80%, and puts the car in limp-home mode, at which point Kia replaces the entire high-voltage battery assembly at no cost. Check the VIN on the NHTSA recall page — cars with warranty-replacement packs are frequently unaware they are included. Until the software is installed, avoid charging to 100% and do not park in an attached garage overnight after a full charge.
Sources for this issue (4)
P0A80 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 P0A80 mean on a Kia?
P0A80 stands for "Replace Hybrid Battery Pack." This code appears on hybrid and some electric vehicles and is a direct instruction that the high-voltage hybrid/traction battery pack needs to be replaced because one or more cells or modules have degraded beyond the system's acceptable limits. The battery management system continuously monitors each module's voltage, temperature, and capacity, and when the cells fall too far out of balance or lose too much capacity, it sets this code. You may notice reduced fuel economy, less electric assist, a flashing dashboard battery warning, or the vehicle entering a reduced-power mode. While the code names battery replacement, the true cause is often just one or a few weak modules rather than the whole pack. On Kia it is documented across 1 model: Soul.
What are the most common causes of P0A80?
The most common causes of P0A80 are: Aged or degraded hybrid battery cells/modules losing capacity, One or more weak modules causing cell imbalance, Internal cell resistance increase from heat and age, Poor battery pack cooling (clogged fan/filter, weak coolant pump), Corroded or loose high-voltage bus bar connections, Faulty battery module temperature or voltage sensor, Failed battery management/ECU module misreading cells (less common). The specific cause varies by vehicle.
How much does it cost to fix P0A80 on a Kia?
Repair costs vary widely with the root cause and Kia model; each issue on this page carries its own estimate where one is published.
Looking for P0A80 on a different make?
View P0A80 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.