LEMON Manuals
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Oldsmobile
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1995
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Achieva SC, 2.3 D, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes - 2.3L
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ECM/Pcm Code Charts
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Code 28, Quad-Driver 2
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DTC 28 will set when:
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DTC 28 will set when:
QDM 2 fault line C is HIGH for 20 seconds or more
Battery voltage is greater than 10.5 volts.