After my recent UIM experience, the car is running fine but the wife came in and told me her check engine light came on
A quick trip to AZ showed a double P0401 error code.... after reading through the threads (I especially liked camljr
) it occured to me that it seemed to happen to more than a couple of fols right after an UIM change. What do you think about it being a vacuum leak at the UIM? I've seen the couple of o-ring missing threads.
I'm gonna try and clean it up, check the connections, etc... but just wonder about a different vacuum leak.