Conditions For Clearing The DTC/CHECK TRANS Lamp

The PCM will turn "off" the CHECK TRANS Lamp after three consecutive ignition cycles without a failure reported.
The DTC can be cleared from PCM memory by using a scan tool.
The DTC can also be cleared from memory when the vehicle has made 40 warmup cycles without a failure reported.
The PCM will cancel the DTC Actions Taken items when the fault conditions no longer exist and the ignition is cycles "off" long enough to power down the PCM.