Re: P0123
He is right about parts costs and dealerships. But now that you are here, we can help you around these issues.
Stay tuned. Those more knowledgeable than I will be around to help.
But kudos on getting a new RCM. But fact is, the code was an easy fix by resoldering a land on the RCM or changing the relay. Happens all the time.
Also I have put 60000 miles on my car running it with only 8 quarts oil. Not 8.5 If I put in 8.5 my light comes on a lot.