Gauge cluster recalibration did not help the issue (hold the trip button and move key to "run" while door is open).
I'm super bummed.
if it's any consolation, i don't think that your car has any problems or that the shift light is ever involved in displaying diagnostic information. further, i don't expect that it is adjusted in response to engine management apart from what i posted earlier.
I suppose that's encouraging, so I appreciate that
Ultimately I'm sure there is something out of order here, even if it turns out to be benign to performance. If I leave it undiagnosed, I'll forever wonder whether I'm making a bad problem worse and won't be able to enjoy myself in the car. Additionally it harms resale value.
if you have a CAN logging tool you can collect the gauge cluster control packet and compare all of the factors that the ecu uses to determine shift light operation.
also, do you happen to know what ecu calibration the car is running? B121E0002H? C121..? aftermarket?
I don't know what a CAN logging tool is. Does it plug into the OBDII interface or elsewhere? I do have a buddy with an OBD2 log scanner and I can check for any codes that just aren't severe enough to trip the CEL.
I don't know what calibration I'm running. Is there a way to tell this without plugging into the OBD2 interface with a particular scanning tool? Also, once we know what calibration it's using, what could we do with that info?
I appreciate the hell out of you taking the time to help man
I think my next step is to remove the valve cover and look for anything obvious. I haven't had the valve cover opened up yet since I bought it.