engine light coming on
I am having problems with my 88 cutlass ciera. the engine light comes on and when I shut it off it won’t start for about 5 minutes. It is worse in the warmer weather above 50 degrees, and the light comes on immediately when I turn on A/C. I bought an OBD scanner and it gives me a code of 41. My dad was a mechanic, but has never worked on anything newer than a 1975 and cant help me with which of the listed problems it might be. The A/C was replaced 4 years ago and I have replaced all of the air sensors and O2 sensor.