SES only goes off by itself when. . .
I was told that the only time the SES will go off by itelf, i.e.,
without being reset after checking, is if the fault was caused by
a gas cap failure. Is this true of false?
Mine has been going on and off since I bought the car two months ago
and my mechanic has never been able to catch it failing. The car runs
perfectly. Am I at risk?
Re: SES only goes off by itself when. . .
Mike is right. You really need the service tech to read the codes. I had my SES light go on and off a couple of times in the past. One fault was a misfire in cylinder 5. The other times were from my post cat O2 sensors. I ended up having to replace both those sensors. The misfire event reset itself (SES light went out) after stopping and re-starting the car. The O2 sensor faults kept the SES light on until the service tech reset it