Ford P0720 Speed Sensor Error Code Repair

OBD2 CAN bus reader scanned P0720 for transmission output shaft speed sensor circuit failure. The check engine light was illuminated, the speedometer was not working and upshifts were slow and sluggish. The green overdrive off light was flashing.The OSS measures driveshaft rotations for spedo and odometer. Shaft RPM also controls shifting. On mine the wiring harness had broken wire. I found a rat's nest under hood and I assume the rat chewed through the cable. It was impossible to get hands up there to repair so transmission had to be lowered to gain access. Once fixed use OBDII code reader to scan bus and clear P720 CEL error. Could also get P0722 or P0731 DTC malfunction trouble readings for Insufficient Input.

[larrysanders]

Instead of gluing the bolt into the socket, put a small piece of masking tape over the head of the bolt and insert it in the socket. That will hold the bolt in the socket for you while you get it started and no mess to clean of your tools.

[on-site]

I like to use the heat shrink tubing that has silicone inside when you heat the heat shrink it it activates the silicone and keeps the moisture out 👍

[toddgilmore]

Been trying to locate this forever!! Still cannot find it or see one on my 2001 Grand Marquis GS O/D flashing, and check engine light on... already found and replaced other sensor (VSS)

[fullviewstudios]

Just wondering, did you put Jack stands or at least a steel rim under the car before you climbed under? A Crown Victoria will crush you like a bug!😱

[ricgomez]

Not to rain on your parade, but if you clear the codes and don't run the car through a drive cycle, you really don't know if it was fixed, because it could come back.

[skidoock]

Mine doesn't engage in forward till i rev it up just threw the same code with flashing od light truck is a 2001 f150 4r70w also the sensor is leaking oil out when I pulled the connector

[Mylotheblacknwhitecat]

Is there another speed sensor on my truck is only one I see one on the rear differential pumpkin

[Mylotheblacknwhitecat]

Hey I've replaced my Mazda b 3000 speed sensor on the rear differential pumpkin and installed new vss and the overdrive light blinking on and off after id say of 20 or so miles of driving

Any ideas why

[toddgilmore]

Rat: "Lets sneak up there between the tiny finger space where the output speed sensor wires are and chew on them!" WTF really?

[RodknockRhett]

How about p1502 on a 1998 Lincoln Town Car?

[lorenzojerez]

2007 mercury mountaineer p0720 speed sensor located

[acousins]

Is it just me or does this guy sound like Kermit the Frog

[nobodynobody]

I have 08 Ford f150 I bought another transmission but this one only has one speed sensor an my 08 tranny has 2 an outer an an inner is there anyway to bypass it so I can get it to shift in the tranny I bought mounted in there perfect it goes in drive but it just not shifting gears

[duckonquack]

Would is be the same for a 2009? I can't find any thing on that year

[n.b.p.davenport]

If anyone could help I have a 1998 my speedometer does not work I suspect the speed sensor on the transmission but I do not have a check engine light or a code, I sure hope it's not the speedometer

[taillightsbelike]

I have a 2007 Ford Focus and I'm having the issue. And I'm not how much of a mechanic where do I find my output on my car? if anyone knows??

[RPSNDRS]

Did u pull the whole transmission down to fix the wire

[lomba]

could a speed sensor cause a p0758 code? mazda 3