ABS and brake pad failure light comes

1996 AUDI A4
150,000 MILES
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PHILIPPL
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Audi A4 B5 1996 model. Light goes off if ignition is turned on and off. ABS sensors have been replaced. Problem recurs after a few days.
Dec 20, 2011 at 3:07 PM
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FIXITMR
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goes off if..........what?
Dec 20, 2011 at 4:33 PM
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PHILIPPL
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ignition is turned off and then restarted. But it comes back on after a while. Computer scanning shows sensor fault and have changed the sensor. It is okay for a while after "changing the faulty sensor fault and fault erased".
Dec 20, 2011 at 10:05 PM
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FIXITMR
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possible wiring/connector issue?
Dec 22, 2011 at 1:59 AM
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PHILIPPL
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mechanic feels its the abs pump unit that's faulty and needs replacement as wheel speed sensors have been changed.
Wiring and connectors have been checked already.
Dec 22, 2011 at 2:15 AM