P0BCD: Generator Inverter Temperature Sensor A Circuit Range/Performance
What to do
As P0BCC — a generator inverter that is thermally limited presents as a battery that will not charge, so do not let this be diagnosed as a tired pack.
What this code means
The generator inverter's temperature reading is plausible but disagrees with the rest of the cooling circuit — usually with the coolant temperature or the drive motor inverter's own sensors. Comparing them is the right check, because power electronics on a shared coolant loop cannot be at wildly different temperatures unless one of them is genuinely in trouble. Argument at P0BCC.
Likely causes
Start here
- Faulty motor temperature sensor · specialist
- Corroded or loose connector · easy
Less common
- Low inverter coolant level · easy
- Faulty power inverter · 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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