P0715 P0717 Hard Shifting and Input Speed Sensor Problem

[ppobo19]

Hi, I have a 2013 Ford Fusion 2.5L 4-cylinder and the gearbox (automatic) has been giving me hard shifting issues. Changing from 1st to 2nd gear causes a loud thud / hard jerk movement and initiates the error codes P0715, P0717, and sometimes P062A. When driving, it will shift from 1st to 4th gear, however, it has failed to shift gears back down to 1st after coming to a complete stop. The only way to get it back to 1st is to clear these error codes while stopped. 

 

Thinking that this is an issue with the input speed sensor like the codes suggest, I hijacked part of the existing pigtail and attached a new 3-pin connector (cost $25), but it did not fix the problem like it did for others. Still get the same code and hardshifting. 

 

Here's what I'm still thinking could help: clean all ground connectors of corrosion, inspect all wires coming to and from the PCM for damage, and last resort would be to replace the TCM module. 

 

I really don't want to have to rebuild the transmission, and I'll just sell it if so, since it would almost cost the value of the vehicle to rebuild it. 

 

Please help me if you have any advice or experience, I'm a novice mechanic! Thanks for your time

 

(Picture: chenged pigtail) 

[WKelley]

Have you checked the actual speed input sensor for functionality?  That would be my main focus.

 

The P062A is unrelated to the transmission but could be causing driveability issues as the fuel pump module, not the pump, may be failing causing problems with engine performance.  The fuel pump module is a fancy relay located in the trunk I believe but don't quote me on that.

[ppobo19]

Thanks for the reply!

 

Since we changed the input speed sensor, we assumed that we changed the part correctly. Is there a best way to test if the new speed sensor is functioning as intended?