What does code P2B28 mean?

Q: What does code P2B28 mean?

Hybrid/EV Battery Pack Coolant Pump A Performance. P2B28 indicates that the hybrid or electric vehicle battery pack coolant pump 'A' is not performing as expected, based on the voltage or current feedback the control module receives. The computer has detected that the pump's actual operation does not match the commanded speed or current draw, which can lead to inadequate cooling of the high-voltage battery.

DTC codes / P2Bxx · Hybrid propulsion / P2B28

P2B28Hybrid/EV Battery Pack Coolant Pump A Performance

P2B28 indicates that the hybrid or electric vehicle battery pack coolant pump 'A' is not performing as expected, based on the voltage or current feedback the control module receives. The computer has detected that the pump's actual operation does not match the commanded speed or current draw, which can lead to inadequate cooling of the high-voltage battery.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.