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Buick
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2002
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LeSabre Custom, 4T65E/MN3
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Self-Diagnostics - 3.8L
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Diagnostic Tests
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DTC P0440: EVAP System
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Conditions For Setting DTC
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Conditions For Setting DTC
DTC sets when EVAP system is not able to achieve or maintain vacuum during diagnostic test.