A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Does anyone know exactly what 18021 - MIL Control Circuit means?

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Old 03-22-2007, 11:56 AM
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Default Does anyone know exactly what 18021 - MIL Control Circuit means?

I thought it was Multi Indicator Lamp? This code is always coming up and all my lights are fine.

3 Faults Found:
16518 - Oxygen (Lambda) Sensor B1 S1: No Activity
P0134 - 35-00 - -
17708 - Misfire Detected. Probably Reason: Low Fuel
P1300 - 35-10 - - - Intermittent
18021 - MIL Control Circuit: Open or Short to Plus
P1613 - 35-10 - - - Intermittent
Old 03-22-2007, 12:18 PM
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- MIL Control Circuit --- mother in law control circuit?? ( wishful thinking)
Old 03-22-2007, 12:44 PM
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Malfunction Indicator Lamp (check engine light??) your car isn't happy.
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