John, a code reader will not read or erase TOD, ABS, or airbag fault codes. Just follow the instructions to read and erase the code with a jumper wire. It's real easy to do. Even if the light goes away on it's own, it's important to read and erase the code that got stored. That way if the light comes back in the future, you won't have old codes to confuse you on the current problem.
Mark
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