Error Code: P0715 Input/Turbine Speed Sensor Circuit Malfunction

[CameronG29]

Hello, I have a 2004 Ford Ranger FX4 Lvl 2 and I recently got this code. The truck has been shifting super hard lately and the RPM's are higher than normal. I was quoted $1300 to fix this problem and was curious if anyone knows anything about this or if I could do it myself.

 

[rubydist]

Unfortunately, that sensor is inside the trans - you need to pull the trans, pull the tc, pull the pump, and pull part of the internals to get to the darn sensor (which costs around $20), which is why the labor is so high. If you are going to do all that, rebuild the trans because you've already covered most of the labor cost.
Before you do that, double check all of the connectors and wiring to make sure its not a wire harness problem.

 

[adsm08]

Ignore this. I looked up the wrong sensor.

 

[RonD]

On the 5R55E or 44E, the automatics the Rangers use, the TSS sensor is inside the transmission
The 5R55W and S do have external TSS

Seen here: https://ww2-secure.justanswer.com/uploads/KE/kennyz1963/2013-09-26_124735_tss.gif

In 2001 Rangers got an ISS sensor located on the outside above shift rod

So yes transmission needs to come out and be disassembled to replace the TSS sensor IF..............thats the problem
Could just be a bad wire, since its a "circuit code"

You can unplug the 16 pin connector on drivers side of transmission and use an OHM meter to test TSS sensor

Drawing here

It is possible for one of the TSS wires to break inside the pan on the harness, so if external wires TSS + and - don't show a connection, you could drop the pan and check.....................but longshot

 

[adsm08]

On the 5R55E or 44E, the automatics the Rangers use, the TSS sensor is inside the transmission
The 5R55W and S do have external TSS

Seen here: https://ww2-secure.justanswer.com/uploads/KE/kennyz1963/2013-09-26_124735_tss.gif

In 2001 Rangers got an ISS sensor located on the outside above shift rod

So yes transmission needs to come out and be disassembled to replace the TSS sensor IF..............thats the problem
Could just be a bad wire, since its a "circuit code"

You can unplug the 16 pin connector on drivers side of transmission and use an OHM meter to test TSS sensor

Drawing hereView attachment 52390


It is possible for one of the TSS wires to break inside the pan on the harness, so if external wires TSS + and - don't show a connection, you could drop the pan and check.....................but longshot

And this is where I got caught.

For so many transmissions, they used the terms TSS (turbine shaft sensor) and ISS (Input shaft sensor) interchangeably.

 

[Dirtman]

Now go stand in the corner and think about how wrong you were... go on...

 

[rubydist]

Or you could be an adult and say "I'm sorry, I was wrong. And I was an ass about it."

 

[Dirtman]

Or you could be an adult and say "I'm sorry, I was wrong. And I was an ass about it."

Standing in the corner is the TRS equivalent of that...