My haldex gen III pump seems to be on the way out. I got these two codes earlier this year. The first one cleared and returned once or twice but the second one is more persistent in returning.
DEM-P093827 - (my translation now) Temperature circuit outside threshold, general signal failure, signal change pace above threshold
DEM-P188914 - Oil pressure pump performance. General electric fault. Short circuit to ground or open circuit.
First one seems like internal failure when I google but the car feels fine to me. I told both codes to a tech who said the pump most likely was the culprit but that there was no rush to swap it until it actually fails.
Volvo wants a hefty $715 USD for parts and labour. The pump itself is "only" between 270-350 USD so I'm debating doing the job myself but I'm not sure. I think the exhaust needs to come off or be slacked and the part I'm perhaps most worried about is undoing the prop shaft. What kind of tool do I need and is this a typically tricky job? I think the prop shaft "flange" on the haldex also needs to be undone and I don't have any pneumatic or power tools for that task. Hand power has gotten me through all other car jobs I've undertaken so far though, lol.