Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC P2544 is a Type B DTC.
The ECM turns OFF the malfunction indicator lamp (MIL) after the sixth consecutive drive trip in which the TCM does not send a MIL illumination request.
A scan tool can clear the DTC.
The TCM clears the DTC from TCM history if the vehicle completes 40 warm-up cycles without a non emission related diagnostic fault occurring.
The TCM cancels the DTC default actions when the ignition is OFF long enough in order to power down the TCM.