Action Taken When the DTC Sets
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P0842 and P0843 are type B DTCs.
- The TCM freezes transmission adaptive functions.
- The TCM inhibits 4th gear if the transmission is in Hot Mode.
P0842
- The TCM commands maximum line pressure.
- The TCM commands the TCC ON at maximum capacity.
P0843
- The TCM forces the TCC OFF.
- The TCM inhibits TCC engagement.