Recently bought a 2003 TT; runs grat, but has a check engine light
obd code is p2181, which transates to "cooling system performance"-
but not very specific.
Contacted previous owner, who has tried the following:
replaced temp sensor on top of motoron drivers' side
replaced cooling fan module (big square thing on the bottomof the
Since we stillhave hte light, I assume none of these were the problem.
So - I'm hoping someone else out there can provide suggestions on
where to look next.
Second question (possibly related) - sometimes the coolant pump will
stay on for over an hour after the car's parked - is this normal?