Car is pulling Transmission codes

[mike mac]

I borrowed my friends OBDII reader just for the hell of it and My 1997 C280 ( 5spd auto) and ran 3 transmission codes!


don remember them off the top of my head but one was a speed sensor of some sort.

a week ago i experienced something weird. I was at a light and my car didnt down shift. it just stayed between 3rd and 5th. it made alot of noise and barely movedonce the light turned green. once i got it going it was fine after that. i figured it was just a glitch.

These trans codes seem to be putting up a red flag for me.

I use the car like its a manual alot, but my MB tecs said its there for a reason and not to worry about it.

does anyone have similar issues? or what did you do to resolve them.

im thinking change the trans fluid and SELL SELL SELL!

[JRE320]

I'm having the same problem. I think it's about time a for a new trans....
It will cost around $3500 parts & labor.. :bored:

[epmills]

Try to get all the codes again, but based off of the speed sensor fault, you will need a new conductor plate which is located on top
of the valve body. Common failure, it contains all of the transmission speed sensors and holds the shift solenoids.
-Zach

[xvvvz]

>>I use the car like its a manual alot, but my MB tecs said its there for a reason and not to worry about it. <<

I'd find another mechanic for advise. You have one of the earliest 722.xxx electronic transmissions and they have had a much higher problem rate, especially compared to the old 4 speeds which were very robust. I would baby that transmission as much as possible.

[jnenad16]

Originally posted by epmills
Try to get all the codes again, but based off of the speed sensor fault, you will need a new conductor plate which is located on top
of the valve body. Common failure, it contains all of the transmission speed sensors and holds the shift solenoids.
-Zach

Im with Zach on this one, especially if it mentioned speed sensor(s) Nxx.