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Oldsmobile
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1995
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Ninety-Eight 3.8 1
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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
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ECM/Pcm Code Charts
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Code P1257, Boost Control Problem (VIN 1)
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Diagnostic Aids
Diagnostic Aids
An intermittent may be caused by rubbed through wire insulation. Check for:
Boost control driver circuit shorted to ground.