P3006 on 2011-2017 Lexus CT (CT200h) — Battery State-Of-Charge Uneven (Hybrid Battery Imbalance)
1 vehicles · 1 makes · $1,200-$3,500 repair
Most Reported On
P3006 is an OBD-II diagnostic trouble code meaning “Battery State-Of-Charge Uneven (Hybrid Battery Imbalance).” This code, used on hybrid vehicles such as Toyota/Lexus, indicates the hybrid battery control system detected an unacceptably uneven state of charge between the cells or modules of the high-voltage battery pack. The system monitors the delta (difference) in charge across the pack to keep cells balanced. A large imbalance usually points to one or more weakening modules or cells, and is common after extended storage or as the pack ages. Left unresolved it can lead to reduced hybrid performance and eventual battery failure. This code is most commonly reported on 2011-2017 Lexus CT (CT200h), with repair costs ranging from $1,200 to $3,500.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P3006, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
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A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
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LAUNCH CRP123X OBD-II Scanner
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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.
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FAQ
What does P3006 mean?
P3006 stands for "Battery State-Of-Charge Uneven (Hybrid Battery Imbalance)." This code, used on hybrid vehicles such as Toyota/Lexus, indicates the hybrid battery control system detected an unacceptably uneven state of charge between the cells or modules of the high-voltage battery pack. The system monitors the delta (difference) in charge across the pack to keep cells balanced. A large imbalance usually points to one or more weakening modules or cells, and is common after extended storage or as the pack ages. Left unresolved it can lead to reduced hybrid performance and eventual battery failure.
What are the most common causes of P3006?
The most common causes of P3006 are: Weak or failing hybrid battery module/cell, Aged or degraded high-voltage battery pack, Extended vehicle storage (self-discharge imbalance), Corroded battery bus bars or terminals, Battery cooling system blockage / overheating, Faulty battery ECU/sensor reading, Weak 12V auxiliary battery affecting readings. The specific cause varies by vehicle.
How much does it cost to fix P3006?
Repair costs for P3006 range from $1,200 to $3,500, depending on the vehicle and root cause.
Which vehicles are affected by P3006?
Au7o has documented P3006 across 1 vehicle models from 1 manufacturers: Lexus.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.