Action Taken When the DTC Sets: P0742

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0742 is a Type B DTC.
The TCM forces the TCC ON.
The TCM commands the TCC ON at maximum capacity.
The TCM commands maximum line pressure.
The TCM freezes transmission adaptive functions.