Question about Oldsmobile Alero

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What would give a check engine light and antilock brake light but when checked with a scanner it comes back as no codes found ? its an oldsmobile alero

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Are you sure its the "Check engine" light and not the "service vehicle soon" light. They are quite different. Only the check engine light will set a code, either current or history. The ABS will also set a code, but will also illuminate the service vehicle soon light. Aleros are notorious for bad front wheel bearings, which contain the wheel speed sensors for the ABS system. They also have issues with the wiring harnesses going to the wheel speed sensors. Have the front wheel bearings checked for excessive play first, then I would suspect the harness, especially if the lights tend to come on more so when its raining or wet out.

Posted on Apr 06, 2011


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1 Answer

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