This is for various Nissan vehicles that use the AW55-50SN 5 speed Automatic Transmission. If you have a CEL Code of P0726, it can be the Speed Sensor (Nissan P/N 31935-8Y000). I didn't see any particular video covering both locations so this is to help out. Did this on my 2006 Nissan Altima SE-R 3.5 (VQ35DE) UPDATE: Did a 1300 mile trip, no CEL, so these DID fix the issue