Conditions for Setting the DTC
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- The TCM has an active malfunction and is requesting ECM intervention OR
- Loss of communication between the ECM and the TCM. OR
- Invalid serial data between the ECM and the TCM OR
- Loss of the state of health message between the ECM and the TCM. OR
- An active vehicle speed malfunction in the TCM