gday guys...i checked my ecu for codes not too long ago and it gave me code 13...which means my oxy sensor is shot....i was going to replace it today so i double checked the ecu, now its giving me code 12....does this mean that the sensor is now working properly? or will it still need to be replaced?
Code 12 means system pass, so theres no more logged error codes. Problem fixed by the sounds of it. Just keep an eye on it over the next few weeks and check the codes a few more times after driving the car, and if it does come back later on, then Id be replacing the oxygen sensor. The oxygen sensor should be replaced about every 100,000 km anyway if you want to get decent fuel economy from these cars.