Land Rover Repair: 2003 Land Rover Discovery 110k miles Vehicle Jerks when Cold P0722, land rover discovery, 2003 land rover discovery

Question
I have a 2003 Discovery with 110k miles and the vehicle jerks when its cold. The M and S are flashing and the Service Engine light is on. The check engine code is P0722 Output Speed Sensor.

So i replaced the Speed transducer (Speedometer transmitter) Dealer Part Number: stc4444   p4019-178635   and new oil filter and gaskets. I'm still getting the same symptoms and same code...

I had the battery and alternator checked out and they both passed.


Any other ideas?

Answer
Hi Max,

did you test the wiring harness and connectors to both the speed sensor and the TCM?  

According to my RAVE manual, P0722 Torque converter slipping.  

Instead of throwing parts at this problem, have your Disco checked over by a LR specialist with diagnostic equipment.  

Best of luck,
JohnMc