P0B6E: Hybrid/EV Battery Voltage Sense K Circuit Range/Performance
What to do
As P0B3C — this is the reading that gets packs condemned, and also the one most likely to be a genuinely tiring cell group caught early, while a module-level repair is still possible. Ask what evidence separates the two.
What this code means
Cell group K's sense circuit is returning a plausible value that disagrees with the rest of the pack. The reasoning for this variant is at P0B3C, and the family's argument at P0B3B.
Likely causes
Start here
- Weak or failed cell group in the battery pack · specialist
- Damaged cell voltage sense harness · specialist
Less common
- Hybrid battery pack deterioration · specialist
- Faulty battery pack sensor module · specialist
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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