P0B09 – Auxiliary Transmission Fluid Pump Motor Supply Voltage Circuit/Open

P0B09 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0B09 Possible Causes

Faulty Auxiliary Transmission Fluid Pump,Auxiliary Transmission Fluid Pump harness is open or shorted,Auxiliary Transmission Fluid Pump circuit poor electrical connection

P0B09 Description

The Engine Control Module (ECM) monitors the Auxiliary Transmission Fluid Pump Motor. The ECM sets the OBDII code when the Auxiliary Transmission Fluid Pump Motor signal is out of factory specifications.