P0C0C: Drive Motor A Inverter Power Supply Circuit Low
What to do
As P0C0B — and fix this before believing other drive faults, because a starved power stage generates misleading codes.
What this code means
The inverter supply for drive motor A is reading low. A power stage on a sagging supply does not stop, it misbehaves — producing less torque than commanded and provoking faults that name healthy parts, which is the P0882 argument in its high-voltage form. The family's argument is at P0C0B.
Likely causes
Start here
- Corroded or loose connector · specialist
- Faulty battery contactor · specialist
Less common
- Damaged high voltage cable insulation · specialist
- Faulty power inverter · specialist
Rare
- Welded battery contactor · 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.
Sign in or create an account to add what you found about P0C0C.