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Cadillac
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1990
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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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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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ECM DTC EO17: Left O2 Sensor Not Ready
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Test Conditions
Test Conditions
Codes EO14. EO15, EO21, EO22, EO26, and EO27 NOT set.
Coolant temperature 58°C or greater.
Throttle between 6 and 30 degrees.
Throttle switch open.
RPM 800 or greater.