1, 2 and 3 Digit Codes: 16
NAME OF CODE16 - Internal Controller (ROM check failure)
WHEN MONITORED
After a reset (ignition key turned to the RUN position or after cranking engine).
SET CONDITION
The code sets in less than 1 second if the ROM checksum does not match a known constant.
THEORY OF OPERATION
When the controller is reset, the microprocessor checks the integrity of the program memory (ROM). This code causes the transmission to go into limp-in mode.
POSSIBLE CAUSES
- Internal controller failure