What does code P2B84 mean?

Q: What does code P2B84 mean?

Charge Air Cooler Coolant Pump A Underspeed. P2B84 indicates that the powertrain control module has detected that the electric coolant pump responsible for circulating coolant through the charge air cooler is running slower than the commanded speed. The module monitors the pump's feedback signal or current draw and sets this code when the actual speed falls below the expected threshold for a calibrated time.

DTC codes / P2Bxx · Hybrid propulsion / P2B84

P2B84Charge Air Cooler Coolant Pump A Underspeed

P2B84 indicates that the powertrain control module has detected that the electric coolant pump responsible for circulating coolant through the charge air cooler is running slower than the commanded speed. The module monitors the pump's feedback signal or current draw and sets this code when the actual speed falls below the expected threshold for a calibrated time.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.