I have an 03 XtraCab Tacoma with 70,000+kms on it. The Air Fuel Mixture sensor died recently which made the CEL light up, so I bought a new one off ebay. It is a Denso brand which is apparently the brand used by Toyota. When I had the code read prior, the CEL no longer appeared.
So once the new sensor was installed, the CEL remained off which was great but after 300kms it came on again. Just for kicks, I disconnected the battery to reset it and reconnected. The light has remained off now for about 50kms. My question is would a problem still exist despite the CEL not displaying as a result of the reset I did? or is it safe to assume there isn't a problem currently.
Thanks