ses light
i don't understand your statement as you are saying it doesn't come on when the rest of the dash does, and you are then saying it comes on when cold...
we need to know the code if possible
Basically in the morning I'll get in and start my car. Everything works great. Then lets say I stop to get groceries, get back in my car 20 minutes later and start it, the SES light won't light up with the rest of the lights.
I had a p0152 and swapped the o2 sensor. My SES light has been doing this ever since I cleared the code with a scanner.

