P0A80 on Chevrolet
Replace Hybrid Battery Pack
P0A80 on Chevrolet vehicles indicates replace hybrid battery pack. Au7o has documented this code across 1 Chevrolet model — most commonly on Bolt EV. 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.
Common Causes of P0A80
- •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)
P0A80 on Chevrolet by Model
Chevrolet Bolt EV(2 issues)
- Battery Capacity Degradation Over Time2017-2023
The Bolt EV 60/65 kWh battery pack experiences capacity degradation over time, reducing the vehicle range from the original EPA rating. Early 2017-2018 models with the original LG battery showed faster degradation, losing 10-15% capacity in the first 50,000 miles. Vehicles that received the recall battery replacement generally show slower degradation rates. Factors that accelerate degradation include frequent DC fast charging, regularly charging to 100%, leaving the battery at full charge for extended periods, and exposure to extreme heat. The battery management system (BMS) also recalibrates periodically, which can cause sudden apparent range drops.
- High-Voltage Battery Fire Risk Recall (NHTSA 21V-560)2017-2022
All 2017-2022 Bolt EV and 2022 Bolt EUV vehicles were subject to a massive recall for battery fire risk. LG Energy Solution manufactured battery cells with two simultaneous defects — a torn anode tab and a folded separator — that could cause an internal short circuit and thermal runaway (fire) during charging, particularly when the battery was charged to 100%. Multiple Bolt EVs caught fire while parked and charging, leading GM to halt sales and production temporarily. GM ultimately replaced every battery module in every affected vehicle at no cost.
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View P0A80 across all makes →Frequently Asked Questions
What does P0A80 mean on Chevrolet?▼
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 Chevrolet specifically, this code is documented across 1 model.
What causes P0A80 on Chevrolet vehicles?▼
Common causes on Chevrolet: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0A80 on a Chevrolet?▼
Repair costs vary widely depending on the root cause and specific Chevrolet model.
Which Chevrolet models have P0A80 documented?▼
Au7o has documented P0A80 on 1 Chevrolet model: Bolt EV.