Originally Posted by SlizSam
That's odd - on most cars - anytime a CEL comes on, the computer records all the data points of the car's current status, and logs the error code that caused it to come on in the first place.
Consistent with everything I've ever read.
There was one other issue with the car relating to the parking sensors, and apparently the dealer started working on that first -- some corroded wiring in the front was causing the sensors to intermittently not register and throw faults. What I'm betting is that while working on that, they cleared the faults recorded with the CEL.