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Cadillac
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1986
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Seville
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Repair and Diagnosis
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Engine Performance
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System
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DFI ECM Tests W/Codes
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Diagnosis & Testing
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Code EO48 - EGR System Fault
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Failure Conditions:
Failure Conditions:
If oxygen sensor fails to indicate a leaner mixture in at least 3 of 5 tests, code "EO48" is set.