OK. Here is the story.
It's a 2003 XC70 with 108K miles. I owned it since bought new. It's turning 7 in two weeks.
Had not head any obvious transmission troubles until couple weeks ago.
About 6 months/7000 miles ago had transmission fluid replaced for the first time, per Volvo shop recommendation. They said the fluid was dark, and that there must be something going on with the transmission. They did not know what exactly. Fair enough...
Couple weeks ago while driving through heavy rain there was an obvious "Event" - trouble down shifting, a few jerks, Yellow warning lights ON, "Transmission Service Required" ON, limp mode (dash instead of "D") ON.
After the engine restart limp mode went away, Warning Lights stayed ON. I've been driving it for nearly 3 weeks since then - shifts perfectly OK.
Took the car to the same dealer to get this diagnosed and to reset the Warnings.
They came up with a wrap-sheet of codes, circled one of codes, and said this code indicated I needed a new transmission. The code is "TCM-002F Lock-up function slipping or not engaged | DTC is found active."
Not entirely unexpected outcome...
So I paid 100 bucks for the diagnostics, and was getting ready to collect the report I paid for and to leave, but my request for a copy of the trouble code report wasn't welcomed at all. Go figure...
And, as I wasn't in the mood to go in a full altercation over that report, ended up leaving with just one page, the one with the code circled.
Now the questions:
What does "DTC is found active." mean?
Does this code correspond to what I experienced when the light came on?
And what are the chances it's not the transmission, but rather its wiring? It was raining. And, before and since, transmission appears to shift just fine.