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Cadillac
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1989
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Allante F7/ME9
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Repair and Diagnosis
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Engine Performance
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System
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Self-Diagnostics
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Diagnostic Tests
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ECM DTC EO17: Left O2 Sensor Not Ready
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Failure Conditions
Failure Conditions
Oxygen sensor voltage stays between 0.307 and 0.609 volts for more than 64 seconds.