GreyFox

Thanks BOOZT

Would a faulty o2 sensor cause the engine light to come on? i took mine (RB25DET NEO) to a mechanic and got the same code result, He got the same code reply and changed a coil pack he thought was faulty and all the spark plugs. i still get the problem, the car runs noticeably rougher when the light comes on but usually i can turn the car off and on again and the light stays off. The light can go a week or more without coming on and usually tends to come on when i take it easy and drive economically. Thanks in advance

Hi. I have the same problem, though it can go days without coming on. It usually comes on when i am taking it easy and not really boosting much (RB25DET NEO) When the light comes on the car noticably runs a bit rougher but i usually can turn the car off and then on again and the light is cleared. Took it to a mechanic that specializes in EFI as I head it could be a leaking fuel injector. He got the code (I think it may have been 21?) Changed the first coil as he said it was faulty, replaced all spark plugs, called me to pick it up then changed his mind as light came on again, kept my car for two weeks (which was ok as i was waiting on compliance plates) then charged me $560.00 to which i stupidly paid at the time. Still have problem three years later and have been reluctant to get someone to look at it again.. Has anyone heard of a leaking injector causing this? Thanks

Does the failure of the o2 sensor generally cause the engine light to appear on the dash?