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1993 Jaguar Sovereign shows a FAULT 12 on the VCM screen, can you tell me what that is thanks

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  • davidandsue Jul 18, 2009

    thanks for immediate reply will check as advised David


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Hi There,
Your car must be either the 3.2L or the 4 L variant. The error is for the Air Flow Meter. If you are planning to do this yourself, check the wiring if there are no corrosion and if there are connected properly. If you have a mulimeter or a tester you can test if the signal is still good. The ECU or computer module looks for air flow meter signal less than 0.2 or more than 4.5 volts between 400 and 300 r.p.m.

Posted on Jul 18, 2009

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