I'm having an intermittent problem that shows up in the shifter assembly on my SRT6 rescue roadster . . . The transmission seems to work properly but occasionally the shifter assembly locks up and will not go back into park. It will move only between Drive & Neutral but will not move beyond the neutral position (acts like it is electronically locked just as if it was in park with the electronic lock on). The only way to get it back into park is to turn off the ignition . . . then it "unlocks" and will go back up into park. BUT doing that sometimes causes the check engine light to come on throws codes P0705 (P0705 is Transmission Range Sensor Circuit Malfunction) & P0715 (P0715 is Turbine/Input Shaft Speed Sensor Circuit) and that puts the car into limp mode! I know the issue is electronic somewhere and not a mechanical issue with the shifter assembly itself.

I was at first thinking that I needed to replace the shifter assembly but now I'm thinking the problem is elsewhere. As I said it seems to be an electronic issue. That code P0715 has led some to replace the transmission conductor plate. Would problems with the conductor plate cause my symptoms??

Any thoughts on where the issue actually is and what I should try?? THANKS for sharing your experience and expertise . . .

 

Ignoring the codes I would say that the adjustment of one of the shifter interlocks is loose.

I had an auto once that when the insides seized up leaving me with one gear the shifter would not move. The little clutch assemblies were seized up solid.

 

Well, without looking at a schematic, if those sensors are part of the conductor plate, then I would replace the conductor plate. But, as the codes state, it is a sensor malfunction, or mechanical and the sensor is warning you of such.

 

Thanks for the responses. I put a dipstick tool in the transmission and the fluid appears to be clear? I have no idea what's in that transmission right now so going to do a full flush (I have a transmission flush machine) putting in all fresh fluid and see what happens from there. I'll post a follow up . . .

 

The issues that I had that required me to replace the conductor plate included transmission slippage as well as going into limp mode if I drove it hard. Restarting the car usually cleared up the issue for a bit. Once I had the conductor plate replaced, I haven't had any issues since.

 

Thanks for that info Itsky . . .

I did the transmission flush today and cleared the trouble codes. Shifter assembly seems to be working fine (at least for now). Car remains in limp mode, however. Code P0705 is gone but code P0715 keeps coming back and throws the CEL again. Guess I need to take it to a professional and get that conductor plate replaced.