Post by
IanS »
https://forums.nicoclub.com/ians-u23642.html
Mon Nov 01, 2010 10:33 am
Well, P0726 is a Engine Speed Input Circuit Range/Performance code. It could be a wiring issue, or the TCU could be misreading the signal.
Im guessing you have a 4 speed trans?
IIRC the 4 speeds had issues with their boost valves, as well as one of the regulators. It was more common to the 04-05 models, but I would not be surprised to see it in an 06 as well.
Also, the torque mount on the A34s tends to fail, and this can increase harsh shifts. Have your mechanic check that out as well.
Your best bet, would be to bring the car to a transmission speciality shop, or a good Nissan dealership.