P0720

[70ray]

I have a 2001 Mountaineer AWD 5.0L Auto trans and I have a check engine light that came on with a P0720 "Output Shaft Speed Sensor Circuit" code. I checked under the vehicle for loose or broken wires and I found nothing. Problem I have is that I have no idea where the Sensor is located. I thought that it would be on the tail shaft housing but I don't see anything in that area. There is a sensor on top of the rear diff--is that it?

The vehicle does not have any shifting problems/speedo problems/O/D problems etc (of course that is according to the wife--I have not driven it yet)

Any one have an idea where to start?

 

[koda2000]

if you're talking about the VSS (vehicle speed sensor), it's in the rear axle.

 

[70ray]

The code is P0720---"output shaft speed sensor circuit"

if you're talking about the VSS (vehicle speed sensor), it's in the rear axle.

 

[drdoom]

Ray look forward of the extension housing, up on top.

 

[70ray]

The manual that I have says that 2000 and newer the output shaft speed sensor is combined with the VSS on top of the rear diff (I had to read a LOT of the manual to find that little bit of info. I guess I am going to clear the code--if it comes back I will need to replace the sensor (everything is connected and the wiring looks okay) unless some one has a better idea?

Ray look forward of the extension housing, up on top.