DTC U0402-68: Error Signal Received From Transmission/Transaxle: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

System malfunction location	Error signal received from transmission/transaxle
Detection condition	The instrument cluster received error signals from the transmission/transaxle for 1 s or more with the ignition switched ON (engine off or on).
Fail-safe	-
Possible cause	The transaxle could not send a normal signal temporarily. (DTCs are stored in the TCM.) TCM malfunction Instrument cluster malfunction
System wiring diagram	-