OBD-II code · Powertrain (generic, extended)
P2CF3 Hybrid/EV Battery Pack Coolant Pump A Underspeed
The HV battery pack coolant pump A runs below the calibrated minimum speed for the commanded duty. Mechanical resistance high, supply voltage low, or pump aged.
Is it safe to drive with P2CF3?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyMechanical load increased (binding)
- PossibleSupply voltage low under load
- Less likelyPack cell imbalance approaching service threshold
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Hybrid Battery Coolant Pump A, Battery Pack Coolant Loop
Related codes
- P2CF7Hybrid/EV Battery Pack Coolant Pump B Underspeed
- P2CF0Auxiliary Thermostat A Stuck Closed
- P2CF1Auxiliary Thermostat B Stuck Open
- P2CF2Auxiliary Thermostat B Stuck Closed
- P2CF4Hybrid/EV Battery Pack Coolant Pump B Supply Voltage Circuit
- P2CF5Hybrid/EV Battery Pack Coolant Pump B Stuck/Stalled
- P2CF6Hybrid/EV Battery Pack Coolant Pump B Overspeed /Air in System
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.