DTC B2604: Shift Position: Description
WARNING: This page is about a different car, the 2013 Nissan Cube. However, it is still accessible from the selected car via links, so may be relevant.
BCM confirms the shift position with the following 4 signals.
- Selector lever
- Transmission range switch
- P position signal from IPDM E/R (CAN)
- P position signal from TCM (CAN)