What does No CCD message from TCM mean?
What does No CCD message from TCM mean? The code P1698 is: No CCD messages from TCM. That means the communication between the Transmission Control Module and the Power Control Module is lost. Sometimes this happens when a PCM, or TCM is replaced without being flashed, a bad connection at the PCM, TCM, or a bad TCM. What code is P1698? The P1698 code means that no digital data is being received by the powertrain controller (on the left inner fender) from the transmission control module, located on the right inner fender. The manual says to check the ccd bus...