My check engine light stays on. The error message is P0604

P0604 Control Module Random Access MemoryPossible Causes Setting Conditions •Clear the codes and retest the system. •If the code remains, the control module must be replaced to correct this problem. A new module must be programmed with the correct software/calibration. Engine cranking or key on for 5 seconds; and the Control module detected a problem with the Random Access Memory function. The control module performs an internal self-test on its Random Access Memory (RAM) or read/write memory. If this self-test fails, this code is set. Internal fault detection is handled inside the particular controller (e.g., inside the Fuel Pump Control Module or FECM with no external circuits). This code sets in 1 Trip(s). Are you having any issues with the transmission shifting? This code will turn on the MIL (Malfunction Indicator Lamp)