P3006 on Lexus
Battery State-Of-Charge Uneven (Hybrid Battery Imbalance)
P3006 on Lexus vehicles indicates battery state-of-charge uneven (hybrid battery imbalance). Au7o has documented this code across 1 Lexus model — most commonly on CT. 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. Typical repair costs on Lexus range from $1,200 to $3,500, depending on the specific model and root cause.
Common Causes of P3006
- •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
P3006 on Lexus by Model
Lexus CT(1 issue)
- Hybrid Battery Pack Degradation2011-2017
The CT200h NiMH hybrid battery pack loses capacity over time, reducing fuel economy and hybrid system effectiveness. The CT200h uses the same hybrid system as the Toyota Prius, and battery degradation follows a similar pattern. Hot climates accelerate degradation, and cells can develop internal resistance imbalances.
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View P3006 across all makes →Frequently Asked Questions
What does P3006 mean on Lexus?▼
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. On Lexus specifically, this code is documented across 1 model.
What causes P3006 on Lexus vehicles?▼
Common causes on Lexus: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P3006 on a Lexus?▼
Repair costs on Lexus range from $1,200 to $3,500, depending on the specific model and root cause.
Which Lexus models have P3006 documented?▼
Au7o has documented P3006 on 1 Lexus model: CT.