What does code U02AE mean?

Q: What does code U02AE mean?

Lost Communication With Hybrid/EV Battery Coolant Pump. U02AE is a generic network communication code indicating that a control module has lost contact with the hybrid or electric vehicle battery coolant pump over the vehicle's communication bus. The module that monitors the pump, typically the hybrid powertrain control module, has stopped receiving expected status messages from the pump controller, so it cannot confirm that the battery cooling loop is operating.

DTC codes / U02xx · Lost communication with a control module / U02AE

U02AELost Communication With Hybrid/EV Battery Coolant Pump

U02AE is a generic network communication code indicating that a control module has lost contact with the hybrid or electric vehicle battery coolant pump over the vehicle's communication bus. The module that monitors the pump, typically the hybrid powertrain control module, has stopped receiving expected status messages from the pump controller, so it cannot confirm that the battery cooling loop is operating.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaLost communication with a control module

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