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Silly question may be , but do you have the owners manual ? My Echarm has a dummy light too that I can count the short or long flashes and look up the code based on how many long or short flashes it does . It may be just a self check procedure if it goes off after start up and all is well . Has it ran hot and have you checked the coolant level ? I have had mine give me a couple of codes but when I took it to my dealer and he hooked it up to a computer he said it was fine and just an over sensitive sensor . I have seen if one mods the exhaust or ECU on an EFI model that the o2 sensor should be replaced with a performance one
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