DTC U028700 (Lost Communication With Trans Fluid Pump Module) set by the transmission Electric Oil Pump...

Bulletin number

26-AT-002H

Component

Power train

Summary

Some Santa Fe (TMA) and Tucson (NX4A) vehicles equipped with a 2.5L GDI engine and 8 speed automatic transmission may have DTC U028700 (Lost Communication With Trans Fluid Pump Module) set by the transmission Electric Oil Pump (EOP). This DTC can cause the Idle Stop & Go (ISG) system to become inoperative. Follow the procedure in this bulletin to replace the Electric Oil Pump on affected vehicles.

Owners of these vehicles have filed 236 complaints in the transmission category.