|
Re: Check Engine Light: A basic question
Here's the simplified version:
Each sensor is tested several times a second.
One bad result is usually ignored, but if you get several bad results in succession the ECU will decide there is a problem and trigger the light.
If you then get a whole load of good results without any bad ones then the ECU will decide the problem has gone away and turn the light off again.
__________________
Subaru ECU and TCU Website
1992 Alcyone SVX Version L
1992 Alcyone SVX Version L
1994 Alcyone SVX S40-II
2004 Subaru Legacy 2.5 SE Sports Tourer
1996 Subaru Legacy 2.2 GX Wagon
1988 Subaru Justy J12 SL-II
|