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Home >> Cadillac >> 1987 >> Seville >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DFI ECM Tests W/Codes >> Diagnosis & Testing >> Hard/Intermittent Code E013 - O2 Sensor Not Ready >> Failure Conditions:
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Failure Conditions:

Oxygen (O2) sensor voltage stays between .275 volts and .630 volts for more than 30 seconds (O2 sensor voltage is not swinging).