1986 Oldsmobile 442 Service Engine Soon

1986 OLDSMOBILE 442
65,550 MILES • V8 • 2WD • AUTOMATIC
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FRANK1949
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What does Service Engine Soon mean and how do I repair it? I have alreaady replaced the O2 sensor on the right side exhaust system.
Aug 19, 2009 at 7:23 PM
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RASMATAZ
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It means you have a problem within the engine management system-pull the code/s by jumping A to B on the DLC and read the flashes


https://www.2carpros.com/forum/automotive_pictures/12900_GM_ALCL_40.jpg

Aug 19, 2009 at 7:33 PM