P0A80: Replace Hybrid Battery Pack
8 vehicles · 5 makes · $150-$7,000 repair
Most Reported On
P0A80 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2011-2017 Lexus CT (CT200h), 2010-2020 Ford Fusion, and 2013-2019 Lexus ES (ES300h), plus 5 other vehicles, with repair costs ranging from $150 to $7,000.
Common Causes
Typical Repair Cost
Based on 9 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0A80, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
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- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
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- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (8)
FAQ
What does P0A80 mean?
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.
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?
Repair costs for P0A80 range from $150 to $7,000, depending on the vehicle and root cause.
Which vehicles are affected by P0A80?
Au7o has documented P0A80 across 8 vehicle models from 5 manufacturers: Chevrolet, Ford, Lexus, Toyota, Volvo.
Sources (11)
- owner-reportFord Fusion Hybrid Battery Replacement Cost - GreenTecAuto
- videoFord Fusion Hybrid Battery Replacement - EricTheCarGuy
- media2013 Ford C-Max Hybrid Battery Dead - CarComplaints
- Forum2013 Ford C-Max Hybrid 12V battery - Car Talk Community
- TSBNHTSA TSB 2013-2014 C-MAX
- NHTSANHTSA Vehicle Page for 2017 Chevrolet Bolt EV - includes complaints and recalls related to battery issues
- ForumReddit r/ChevyBolt thread discussing battery capacity degradation on 2017 Bolt EV
- ForumReddit r/Toyota thread discussing hybrid battery degradation in 2021 Sienna
- ForumReddit r/ChevyBolt: Bolt Battery Recall Discussion
- videoEngineering Explained: Chevrolet Bolt EV Battery Recall Explained
- ForumReddit r/Prius thread discussing hybrid battery degradation on Prius C
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.