Mazda 6 Service Manual: No.2 vehicle moves in n position

No.1 vehicle does not move in d, s, l ranges, or in r position

No.3 vehicle moves in p position, or parking gear does not disengage when p is disengaged

Other materials:

Mazda 6 Service Manual: Dtc c1955, c1956
Caution When attaching the tester lead to the DSC HU/CM connector the SST (49 G066 004) must be used. Diagnostic procedure ...

Mazda 6 Service Manual: Transaxle Ranges
The shift position indicator light in the instrument cluster illuminates. The selector lever must be in P or N to operate the starter. P (Park) P locks the transaxle and prevents the front wheels from rotating. WARNING Always set the selector lever to P and set the parking brake: Only s ...