I wasnt aware of the obd2 situation, Ive researched "limp mode" on other forums and many people have experienced "limp mode" or symptoms exactly like "limp mode" with their P28 obd1 unit so IDk.. As for the oil light no I never said the oil light was on, I said i lost oil pressure and perhaps that sent my ECU into limp mode and yes there is a CEL no code however its a constant CEL when i connect the two prongs.