Tried a search with no avail. Wifes '05 XC70 w/ 60k came up with check engine light this morn. It was 2 qts low on oil, hoped that was it but didn't reset light. Read codes w/ my OBDII & came up with P2112 TAC system stuck closed. Every time I try to erase code the reader says bad connection and won't reset (this always happened w/ her S40 as well). Any quick sotution to un-sticking throttle actuator? Thanks in advance for any help!

 

No real ideas on unsticking the TAC, but I would be equally concerned as to why the car was 2 full quarts low on oil!