Fault codes p1312, p1334, p0106 and p0730

[MARCCOLEMAN6]

I just had my 9-5s obd checked and it showed four fault codes.

P0106 which I understand is the thermostat and temperature sensor, should be an easy fix.

P1312 and P1334, all I can find on these are they are cylinder cumbustion signals for the four cylinders. What is the fix for these?

The code I am most concerened with is the p0730 code. The other day the car went into limp home mode and the next day it was fine. Will changing the fluid help this situation and what else can I do short of a new transmission?

[Brad Lauzze]

The P1312 and 1334 is the Direct Ignition Cassette beginning to fail, pretty easy to replace.

The P0730 is a little worrisome... how many miles on the car and has the transmission fluid ever been changed?

[MARCCOLEMAN6]

The car has 162,000 miles on it my girlfriend bought it used and is not sure about the fluid being changed. It looks pretty good when i pull the dipstik. Have not had any trouble previous to the light coming on and going into limp home mode. Fluid level is full with no leaks.

Thanks for the quick response