P0A80 fault code: what it means

P0A80: Replace hybrid/EV battery pack: the battery ECU sees weak cells. On 1st-gen Soul EV the 27 kWh pack loses capacity fast.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

degraded high-voltage battery cells (1st-gen Soul EV)
internal short in the E400 pack (Soul EV recall 23V218 / SC267)
cell imbalance in the pack

P0A80 by make

Kia

Replace hybrid/EV battery pack: the battery ECU sees weak cells. On 1st-gen Soul EV the 27 kWh pack loses capacity fast.

Usual causes: degraded high-voltage battery cells (1st-gen Soul EV); internal short in the E400 pack (Soul EV recall 23V218 / SC267); cell imbalance in the pack

Lexus

Hybrid battery pack needs replacing: the battery ECU has seen one or more blocks of cells much weaker than the rest. Usually comes with the Check Hybrid System light.

Usual causes: worn/weak hybrid battery modules (age and heat); voltage imbalance between battery blocks; blocked or failed hybrid battery cooling fan; corroded bus bars or sense-wire connections

MG

Hybrid/EV battery pack needs replacing (cell block weakness detected) on MG hybrid or plug-in models.

Usual causes: weak battery module(s); cell voltage imbalance; battery cooling fault

Toyota

Hybrid battery pack needs replacing: the battery ECU has seen one or more blocks of cells much weaker than the rest. Usually comes with the Check Hybrid System light.

Usual causes: worn/weak hybrid battery modules (age and heat); voltage imbalance between battery blocks; blocked or failed hybrid battery cooling fan; corroded bus bars or sense-wire connections

What the repair usually costs

12 V battery replace, standard flooded (small / medium car)NZ$190–NZ$330 · A$170–A$310
12 V battery replace, standard flooded (SUV / ute / 4WD)NZ$290–NZ$500 · A$270–A$460
Radiator cooling fan motor or fan assemblyNZ$350–NZ$1,280 · A$330–A$1,210
Hybrid battery reconditioned exchange (Aqua / Prius C / Axio / Fielder)NZ$1,360–NZ$2,430 · A$1,390–A$2,370

Not sure what P0A80 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.