I've been digging for info and I'm not finding much on this particular code. The code is for the "turbine/input shaft speed sensor circuit" and nobody seems to know anything about it. Does anyone have a decent description on where exactly this sensor is located? I can check the wiring and everything, I just need to know where the heck this gremlin is hiding. I really dislike flashing arrows on my dashboard.

 

Appears to be transmission code; automatic I'm assuming? Any problems with it?

BTW: Is your car still smoking?
https://volvoforums.com/forum/volvo-...n-73946/page2/

 

Car's still smoking for the moment. I have the kit on the way to fix that issue. Right now, I have a transmission code that's driving me nuts. It is an auto. Soon enough, when I build the funds, I'll have a manual swap and ecu to match so I won't have to worry about it anymore. That's still well down the road though.

 

You didn't say it was the 95 but I'll go on that.
You might want to try the under hood diagnostic connector to get the "Volvo" code as it might be easier to understand if you do have the OBDI box.

You should check the TCM for clean contacts. It's free, fairly easy and may solve your problem or prevent a future one.

Next would be to check the contacts at the transmission speed sensor. Again it's free and fairly easy.

It might be a bad trans speed sensor or a loss of the signal someplace. You do have the flashing arrow, do you have a good speedometer signal without it cutting out or bouncing around abnormally ??

Is the fluid full and fairly clean ??

 

I always thought that was the transmission death code but I could be wrong. Mine was doing that before I changed it. The tranny was bad when I purchased the car. Slipping like crazy, no good reverse, no kick down, no torque, etc.

 

I know for a fact this things good. No slipping, shifts fine, just that one intermittent code. Of course, if I push it any harder than I am, I WILL have a bad transmission. I'm due for a fluid change on the transmission. It's getting a little dirty. I will pull up the OBD code under the hood tomorrow while I do the PCV.

 

That code is for the circuit, it has nothing to do with the integrity of your transmission.

I had a P0750 code for the longest time, it was for solenoid A circuit. I fixed it after finding out that a rat/mice had chewed a ground wire just below the intake.

So... here is the solution:

Get a wiring diagram, grab a couple, CHECK ALL ground points inside the engine compartment. You also must take off the intake and check the ones under there.

If you want to confirm that it is a circuitry problem, get a DVOM and test the contacts for the Speed Sensor at the Transmission Computer connector. Chances are that there is going to be infinite resistance (indicating an open circuit). If there is 0 resistance, you got a short somewhere. If you get anything else, refer to the manual to confirm if resistance is within spec. if you get an out-of-spec resistance value, take the sensor out and recheck resistance. if it's still out of spec, you need a new sensor.

Chances are that a rodent got in there and chewed off a couple of wires.

Oh: you'r if car is suffering from other circuit problems (e.g.: knock sensors) finding those chewed off wires will most likely also solve the other circuit problems.