Question about 1994 Jaguar XJ6

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Fuel 12/Fault 12 Error Message

My 1994 Jaguar XJS 6 cyl. will turn over, but won't crank. It gives the Error Code: Fuel 12/Fault 12. What could be the problem?

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Check the mass airflow sensor circuit; thats what the owners manual says DTC code 12 pertains to, but to me it sounds like a fuel pump. i had the same problem, it would turn over, but not crank. make sure youre getting spark and everything else first because the fuel pump is located in the gas tank, and requires removing the entire tank to access it, which easily can turn into a 4-6 hour job.

Posted on Dec 08, 2008

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