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P0700 sets in the engine controller when there is a code stored in the trans controller. The one in the trans controller and pointing to the actual problem is the P0740.
This code sets when there is an issue on the torque converter clutch solenoid's control circuit. The converter clutch solenoid is on the valve body, I'm assuming that when the valve body was replaced it came with solenoids. If not, the converter clutch solenoid is the most likely cause for the code.
If the solenoid is new then it can be wiring between the trans and trans control module, or it could be the module itself. The next thing that would need to be done is test the wiring.
Hi, thanks for your reply, I was waiting to see if your advice was correct before the rating. I took the info to my mechanic. I should be able to rate by tomorrow I hope. Thanks for your patience
It wasn't any of the things you mentioned in your answer??
don't know yet that's where I was hoping you might help. They say they have to rebuild the transmission now.
Berts Automotive Transmission Repair, Vancouver,B.C. Canada
I don't think they know. It seems to be a Sensor of some sort that keeps turning on the check engine light at any sustained speeds over 55 mph.
This was actually a third opinion. the original Volvo shop said I should replace the transmission. The other transmission shop said I should replace the valve body and so did these guys. So now I am stuck already for 3 grand and now it looks like another 3 grand, and that's with a break in labour supposedly. That's why I was reaching out to this forum to see if anyone has gone through this procedure before.
no debris, he said that it looked like the transmission had been partially rebuilt before and he has to measure some rod and check a couple of other parts, but has to go into the transmission to do so. I am not sure if they tested the converter clutch solenoids electrical circuit. are these the solenoids that came with the new valve body? or something else
they did, I wasn't sure if you might have been referring to some other solenoids. I am going to make sure that they test the converter clutch solenoids. are these the same solenoids as the ones on the body valve, because new ones did come with the body valve as well as wiring I believe
I will see if they have checked that possibility out. Thanks
no one even mentioned the possiblility of it being the torque converter
Thanks for your answers, I have another shop going to change out the torque converter, as he checked all the electrical and it seems okay. He says the torqued converter is the only other possiblility. Hope he is right What do you think?
There's no need to relist the question, simply hit the reply button if you need more help. I never got notification of your last reply because the question closed.
If all electrical components have been ruled out then it's possible that the converter could be the issue.