I am getting a P0722 code. The speedometer is correct but the transmission ****s erratically between 55 and 60.
The trip computer says error when looking at miles and the fuel economy is stuck at 3.1MPG.
I just had the axles changed along with a speed sensor because the speedometer was going crazy. The mechanic said the harness was frayed because someone had routed it and it was rubbing so he spliced it new wire.
The speedometer is working fine now and it only shifts funny around 55-60 when not on the gas hard.
The only code I got was a P0722
anyone have any ideas where to start?