Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 73
Possible causes
- Pump worn high
- Air trapped in cooling circuit medium
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 300–1500 €
- Estimated time: 1–5 h
- Component: battery cooling pump
- Component: coolant circuit
- MIL / check engine light
Sources
References
sae:J2012