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1990C4S 1990C4S is offline
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Join Date: Sep 2009
Location: North of You
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Scantool ABS Help - 1990 C4

Does anyone know why I might have faults on my ABS system that do not display on Scantool?

I previously had a G-sensor issue that was displayed properly, and I fixed it, and fault is gone.

Now I get my ABS and traction lights on after about 30 seconds of driving. No 'gong', just the two warning lights.

When I turn the car off and scan there is no fault displayed, and when I run scantool while I'm driving, it won't connect to the ABS sytem. I can only connect the ABS feature when the engine is off.

Anyone know what might be going on?
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Old 07-13-2023, 10:22 AM
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