P0A80 on Chevrolet: How to Diagnose & Fix
Replace Hybrid Battery Pack
1 Chevrolet model · 2 documented issues · 1 critical
P0A80 on Chevrolet by model: symptoms, diagnosis and fix
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.
Common Symptoms
- Reduced range compared to when vehicle was new
- Full charge shows fewer estimated miles
- Range drops significantly in cold weather
- Battery percentage drops faster than expected
- GOM (Guess-O-Meter) range estimate increasingly inaccurate
How to Fix
Use the Hilltop Reserve or Target Charge Level feature to limit charging to 80-90% for daily driving — this significantly reduces degradation. Avoid DC fast charging for daily use; save it for road trips. The Bolt EV battery has an 8-year/100,000-mile warranty covering degradation below 60% of original capacity. Vehicles that received the recall battery get a new warranty starting from the replacement date. Monitor battery capacity using the Energy screen or a Torque Pro app with an OBD-II adapter to track state of health over time.
Sources for this issue (1)
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.
Common Symptoms
- Recall notification from GM or NHTSA
- Battery warning messages on dashboard
- Charging stopped or limited by vehicle software
- Vehicle limits charging to 90% automatically
- Burning smell or smoke from under vehicle (EMERGENCY: call 911)
How to Fix
Check your VIN at my.chevrolet.com/recalls or NHTSA.gov. All affected Bolts receive a FREE complete battery module replacement with updated LG cells that do not have the manufacturing defects. The replacement also includes updated battery management software and an extended 8-year/100,000-mile warranty on the new battery. If you have not had the recall completed, schedule it immediately at any Chevrolet dealer. Until the recall is completed, GM advises: do not charge above 90%, do not deplete below 70 miles of range, do not charge indoors overnight, and park outside away from structures.
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Sources for this issue (1)
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 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 it is documented across 1 model: Bolt EV.
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 Chevrolet?
Repair costs vary widely with the root cause and Chevrolet 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.