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2003
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XJ8 Base
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Engine Controls - Self-Diagnostics
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Diagnostic Trouble Code Identification
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DTC P0066: Air Assist Close Valve Circuit Malfunction
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Possible Causes
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Possible Causes
AACV power circuit failure.
AACV ground circuit fault.
AACV to ECM pulse width modulation drive circuit open, shorted or high resistance.
AACV failure.