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Home >> Oldsmobile >> 1990 >> Cutlass Calais Base, 4D Sedan, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.3L PFI >> Diagnostic Tests >> Code 45: Rich Exhaust Indicated >> Notes

Code 45: Rich Exhaust Indicated: Notes

  1. The following conditions must be met to set a Code 45:
    • O2 sensor voltage is greater than .75 volt.
    • No Code 33 or 34.
    • Fuel system in "closed loop".
    • TPS greater than 5 percent.
    • Above conditions met for 50 seconds.
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