Circuit Description
WARNING: This page is about a different variant/trim than selected.
Engine speed information is sent to the transmission control module (TCM) by the engine control module (ECM) through the controller area network (CAN). A 2-wire circuit is used to communicate data between the ECM and TCM, CAN H and CAN L. A fault in the CAN will not cause DTC P0727 to set by itself. If a communication fault occurs, other DTCs will set before P0727.
When the ECM sends the TCM an invalid engine speed, DTC P0727 sets. DTC P0727 is a type B DTC.