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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 P1144: 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 supply circuit fault.
AACV ground circuit fault.
AACV to ECM Pulse Width Modulated (PWM) drive circuit open, shorted or high resistance.
AACV failure.