2003 Mazda Tribute

These are some of the codes I'm getting in BlueDriver, wanted to see if anyone has had similar codes and what fixes they've successfully done or if they even need to be done.
In BlueDriver, there's a top reported fix which I will list next to it.

B1318 - Replace Battery
B1352 - Replace / Repair ignition switch
B1881 - Replace seat belt pretensioner connector
P0705 - Replace Transmission Range Sensor - Transmission Range Sensor "A" Circuit (PRNDL Input)

So far I've only attempted to fix P0705; apparently Transmission Range Sensors are also called a neutral safety switch? Replaced it, still shows the code so I'm not sure what to do anymore. It wasn't so bad as I was doing other maintenance while replacing it, like changing the water pump and belt, and valve cover gasket.

B1881, no idea what that pretensioner connector looks like, where it's located, etc. No mention of it anywhere in the manual, or at least indexed. The seat belt light isn't on. Although it did come on 1 time and then went off afterwards, but that was a year ago. The light indeed works; it illuminates with every other light before you start the car.

B1352 - I don't know if there are any symptoms related to this part, but it looks like it's the ignition slot where you insert the key?

B1318 - I guess I should change the battery since it's old? Although the voltages seem fine.