what is an ISC circuit on Subaru Imprezza? CHECK ENGINE LIGHT code P1507 ISC is Idle Speed Control.
Question about Subaru Impreza
P0335, P0328 & P1507 fault codes on subaru impreza (non-turbo) my battery is also showing as weak, could this be problem? Yes, Batteries are know to cause a great deal of problems with everything.
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