P0CB6: Hybrid/EV Battery Temperature Sensor O Circuit Intermittent/Erratic
What to do
As P0BC2.
What this code means
Battery temperature sensor O is reading erratically, which is a connection rather than a measurement: a pack's thermal mass cannot change in an instant. The family's argument is at P0BC2, and the note at P0C88 about these later sensors having no neighbour to be checked against.
Likely causes
Start here
- Faulty battery temperature sensor · specialist
- Corroded or loose connector · easy
Less common
- Damaged cell voltage sense harness · 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.
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