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Cadillac
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1992
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DeVille Base, 4D Sedan
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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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Pcm Trouble Code Diagnosis
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Pcm Code E45, Oxygen (O2) Sensor Rich Exhaust Signal
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Failure Conditions
Failure Conditions
O2 sensor stays rich for more than 51 seconds.