Set Condition

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

If the TCM detects the battery voltage or switched voltage is less than 4.0 volts for a calibrated amount of time.
The redundant signal of the speed sensor signals do not correspond.
The results of two independently performed calculation within the TCM are not equal.
A communication problem is detected between the Main Microprocessor (MMP) and the second microprocessor is detected for a calibrated amount of time.
An internal failure of the second microprocessor has occurred.