P0B61: Hybrid/EV Battery Voltage Sense H Circuit High
What to do
As P0B3E — the one direction not to leave. If the car has limited or refused charging, leave it limited; that is protection, not a second fault.
What this code means
Cell group H's sense circuit is reading above its valid range — the direction that carries the overcharge branch and should not be deferred. Set out at P0B3E; family argument at P0B3B.
Likely causes
Start here
- Damaged cell voltage sense harness · specialist
Less common
- Wiring shorted to voltage · moderate
- Weak or failed cell group in the battery pack · specialist
- Faulty battery pack sensor module · specialist
Symptoms
Components involved
Information, not instruction
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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
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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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