Trouble Code Erasure

TROUBLE CODE ERASURE
A Diagnostic trouble code will be cleared from TCM memory if it has not reset for 40 warm-up cycles.

A warm-up cycle is defined as sufficient vehicle operation such that the coolant temperature has risen by at least 4.4 °C (40 °F) from engine starting and reaches a minimum temperature of 71 °C (160 °F)
The Malfunction Indicator Lamp (MIL) will turn off after 3 good trips or when the DTC's are cleared from the TCM.