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Home >> Cadillac >> 1983 >> Seville 4.1 8 >> Repair and Diagnosis >> Engine Performance >> System >> DFI Tests W/Codes >> Diagnostic Code Charts >> Code 45 - Rich Exhaust Signal >> Note On Intermittents

Note On Intermittents

If an intermittent Code 45 is being set, manipulate related wiring while observing engine data parameter .0.7 at part throttle with the engine warm. If the failure is induced, the oxygen sensor reading will change from its normal fluctuating voltage (above .60 and below .30) to reading never going below .50 volts. This wild help to isolate the location of the malfunction.