r/ScionxB • u/achi_aav • 9h ago
Check Engine Light still on after replacing plugs & coils — hasn't cleared itself on its own yet (No codes?)
galleryHiii,
So my Check Engine Light came on recently on my 2006 Scion xB. I went ahead and changed out all four spark plugs and ignition coils. I didn't reset or clear the light using a scanner—I assumed driving it around for a bit would let the car's computer realize the fix was done and turn the light off on its own. However, I've been driving it for a while now and the light is still on. There are no diagnostic trouble codes or stored codes coming up to tell me what's wrong.
What are the most common causes for this on the xB, and what easy things should I check/clean myself before taking it to a mechanic?