What does code P2B64 mean?

Q: What does code P2B64 mean?

Coolant Pump B Control Module Overtemperature. P2B64 indicates that the control module for coolant pump B has detected an internal overtemperature condition, meaning the electronics that drive the pump are running hotter than the design limit. The module sets this code when its internal temperature sensor reports a value above the calibrated threshold, typically to protect the pump driver from thermal damage.

DTC codes / P2Bxx · Hybrid propulsion / P2B64

P2B64Coolant Pump B Control Module Overtemperature

P2B64 indicates that the control module for coolant pump B has detected an internal overtemperature condition, meaning the electronics that drive the pump are running hotter than the design limit. The module sets this code when its internal temperature sensor reports a value above the calibrated threshold, typically to protect the pump driver from thermal damage.

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.