P0C73
Hybrid Battery Pack Cooling Pump Performance
BMS detects insufficient flow from the battery cooling pump despite commanded operation, indicating mechanical degradation or air pocket.
BMS detects insufficient flow from the battery cooling pump despite commanded operation, indicating mechanical degradation or air pocket.
Common causes
- high
Pump worn
One of the most commonly reported causes for this code — check this first.
Typical part cost: $330-1650
- medium
Air trapped in cooling circuit
A plausible cause — test and verify before replacing parts.
Typical part cost: $330-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0C73 mean?
P0C73 means "Hybrid Battery Pack Cooling Pump Performance". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0C73?
pump worn; air trapped in cooling circuit — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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