Hybrid Battery Temperature Sensor B Circuit malfunction
What this part does
These sensors measure temperature at points inside the high-voltage battery pack. The battery control system uses the readings to run cooling or heating and to limit power or charging if the cells are too hot or too cold. The battery is part of a high-voltage system, so work on it is for trained people. A fault may result in a warning, reduced power, slower charging or louder cooling operation.
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Repair
Likely repair
- Parts often involved: high-voltage battery control unit or sensor, wiring or connector
- Labor: 0.5–5 h
- Difficulty: Hard
- DIY: Garage only
Related codes
About this page
Scan figures come only from diagnostic scans recorded through our own apps and tools. Cars are usually scanned because a symptom or warning light prompted it, so these figures describe our scan records, not how often a fault occurs in any make or model.
Notes about specific manufacturers summarise public records (NHTSA owner complaints, recalls and manufacturer service bulletins), cited under each note. They report what those records say, not our measurements, and they do not suggest that any manufacturer or vehicle is better or worse than another.
Repair time and cost estimates come from a public repair dataset and are typical ranges, not quotes.
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This page is general information, not professional advice. Have safety-critical faults (brakes, steering, airbags, high-voltage systems) checked by a qualified technician. To the extent the law allows, we accept no liability for repairs or decisions made from this page.
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