Does Disconnecting Battery Clear Codes. If the EGR Valve is indeed faulty the code will reappear and the check engine light may come on. All you need to do is disconnect the negative battery.
Most of these small units plug in to the cigarette lighter or the optional 12-volt plug-in port on many vehicles. Often one also has to short the disconnected battery wires against each other since many cars have a small buffer power pack to hold settings and errors after. Option 1 - Disconnect battery.
Enables battery storage statics such as battery temperature.
Most vehicles from 1996 and newer have a keep alive memory built-in to the computer system. Use a settings keeper that will save computer codes radio settings and other settings normally lost when disconnecting the vehicles battery. I am assuming you mean for your car. All you need to do is disconnect the battery and drain the ECU of power.
