ecu flashes 1, i reset ecu runs fines if i get on it from a stop, ecu then flashes 1, but really doesnt seem to affect performance tho... im stumped here.. i did a DIY TB enlargement project, only after that do i get code 1.... any ideas anyone.. Bill

 

well, if u somehow cut the o2 sensor wire then u will be getting a code 1. if ur check engine light is going on then ya. a lot of ppl mistake the code one of the ecu as the first blink the ecu makes when the key is hit. thats is not a code. just clarifying incase u made that problem.