I have a 2004 Volvo XC90, AWD with T5. Getting P0740 / 002f error code. I had the three sensors replaced. Two different tranny guys have told me if the fluid is clean and the sensors are good the 002f code means I need a new transmission. But...
When I leave my house, after about 2 miles, car goes into limp mode.
However...if I leave my house and put the car in cruise control as soon as I reach 35 MPH, the transmission seems to work perfectly. Even when having to stop for a red lights or stop signs, or hit the brake for slower drivers, if I can resume to at least 35 MPH and stay in cruise control mode, the car avoids going into limp mode and seems to shift fine!
It seems to me that if the car seems to work fine while in cruise control but not when out of cruise control, it is some kind of electronic or electrical problem rather than a bad transmission.
Am I crazy? Anyone familiar with this type of problem?
Thanks!
Dave

 

Limp mode is something that happens in a computer program (and it's always been that). So I would say you have discovered an interesting inconsistency in the computer program. Having written a few, it's sure not unusual to have something like that in one.

So that doesn't solve the basic problem, but it does illustrate that the problem is minor, mechanically speaking. In fact, if the torque converter never attempted to lock up, it would probably work just fine forever.

 

Mine did something like that, it seems to be more like my symptoms. My symptoms lead me to bad oiltrap, and clogged passages. The symptoms started with a feeling that the Turbo was an issue, everytime I was thinking the turbo was going on, it would vibrate funny(lack of better description) Then eventually a code on the engine was turning on the check engine light. Which is the last time I drove it. I parked it, and put it up on a ramp, and you can see where I am at know on my thread. (not far)