P0CEB: Hybrid/EV Electronics Coolant Pump A Control Circuit Low
What to do
As P0C31 — check the electronics coolant level first; it is a separate reservoir from the engine's and easy to overlook, and if there has been recent coolant work, have the circuit properly bled. Expect slower charging while it is unfixed.
What this code means
Electronics coolant pump A's control circuit is reading low — a short to earth, or a driver output failed on, which can leave the pump running after the car is locked and drain the 12-volt battery. The family's argument is at P0CE9.
Likely causes
Start here
- Faulty inverter coolant pump · moderate
- Air trapped in the inverter cooling circuit · moderate
- Low inverter coolant level · easy
Less common
- Corroded or loose connector · easy
- Open circuit in pump wiring · moderate
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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