Weird check engine light.
 

SO I cant find anything to explain this haven't had the chance to run the code yet. But when my truck is idling or running no check engine light but when I turn it of and turn it to A/C mode the light is on? I figure to check on here but I couldn't find anything.


Thanks for any help.






2002 Dodge Dakota SXT 3.9 5 Speed 4X4.