OBD-II code · Powertrain (generic, extended)
P2B2A Hybrid/EV Electronics Coolant Pump A Overspeed - Dry Run
The hybrid control module detects that the power electronics coolant pump A is running above the calibrated maximum speed without load. Indicates dry running due to coolant loss or air ingestion.
Is it safe to drive with P2B2A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCoolant loss in electronics loop
- PossibleAir drawn into pump suction
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Hybrid Electronics Coolant Pump A, Power Electronics Coolant Loop
Related codes
- P2E46Hybrid/EV Electronics Coolant Pump B Overspeed - Dry Run
- P2B27Hybrid/EV Electronics Coolant Temperature Sensor C Circuit High
- P2B28Hybrid/EV Battery Pack Coolant Pump A Performance
- P2B29Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry Run
- P2B2BEngine Coolant Temperature Sensor 5 Circuit
- P2B2CEngine Coolant Temperature Sensor 5 Range/Performance
- P2B2DEngine Coolant Temperature Sensor 5 Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.