Originally Posted by
civil_wrongz
Error codes: P0715 and P0730. Both were noted as pending on the ECU which is why I never got a check engine light.
P0715: Input turbine speed sensor circuit 'A'.
P0730: Incorrect gear ratio.
I'm led to believe that the bad sensor is leading to an incorrect gear ratio which didn't make sense to me at first with an automatic transmission. I think because of the bad sensor(s) the TCM or PCM doesn't know the MPH or RPM of the engine and doesn't know when to shift. The computer then disengaged the transmission entirely but not to limp home mode probably because it couldn't. Worst case it is a TCM failure, torque converter failure, or electrical damage in hard-to-reach areas.
Bad connection or speed sensor click on this link for Crossfire with the same problem and be sure to watch the video:
P0715 DTC and correction
Trouble shooting steps are in the service manual for the P0715 code.
If the electrical connection at the transmission is leaking oil I would try fixing the leak before dropping transmission pan as cleaning and stopping the oil leak may correct the P0715 code. You will need to clear the codes with your scan tool. I don't think they clear by themselves.
IF you decide to buy the conductor plate to effect repairs I would purchase the complete plate with the valve, sensors and solenoids, not just the plastic plate. It's your call, but why take a chance on the problem being just in a bad connection. The sensor itself may be bad.