I got my check engine light back. Going to get the codes tomorrow. Changed the crank case breather system out over the weekend hope I didn't mess anything up. thanks for the help. Rough at idle after check engine light came on. Will post any new information. Thanks

I unhooked the battery and pulled and cleaned the ecm and the tcm contacts and now everything seems to be working. I don't know if I cleared the codes for awhile or if I was having a contact problem. I will keep posting as I learn more. If anyone knows feel free to let me know.

Thanks

Thanks like I said new to this car. Yes you are correct there are 4 codes in total p0863, u0073, p0504, p0571. the gauges the needle swing up on start then go right back as for the lights the check engine stays on and the srs light.

I am headed out now to tinker around with it. Thank you, I will ...

Hi, just joined this forum because I just purchased a 2004 XC70. I owned a volvo years ago that over 250k on it if I remember correctly. I really liked that car. This XC70 has 196k on it and just threw code p0863 the TCM. The car seems to be slow going into first and the gauges on the dash come on ...