2 faults code found

[lucky555]

17981 - left engine mound solenoid valve (n144): open circuit
p1573 - 004 - no signal/communication
17983 - shareware version. to decode all DTCs
p1575 - 001 - please register /activate

??? what is that ???

no check engine light is open but....
i try to erase but
1 sec after... he come back...


audi s4 2004 4.2l...

thanks
pluc

[V8weight]

The solenoid code means you have a bad motor mount, as they are fluid filled mounts, and eventually start to leak. the other three codes appear to be related to your scanner, or vag itself. probably started trying to connect to your ecu before the ignition was on. Btw, I have a brand new mount w/sensor on my shelf, as I had the same issue with my '04 S4, but ended up trading it in before I got around to installing it.