P0C00
Drive Motor Coolant Pump Control Circuit
Electrical fault on the drive motor electric coolant pump control output. Without flow, motor and inverter overheat under load.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Common causes
Ordered by how often each turns out to be the cause.
- Pump electrically failedCommon
- Wiring openPossible
Parts involved
- Electric Coolant Pump
- Hybrid Control Module
- Wiring Harness
P0C00 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.