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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 44: Lean Exhaust Indicated >> Notes

Code 44: Lean Exhaust Indicated: Notes

  1. The following conditions must be met to set a Code 44 when signal voltage is present on circuit No. 412:
    • Value remains less than .3 volt for at least 50 seconds.
    • System is operating in "closed loop".
    • No Code 33 or 34.
    • "Closed loop" integrator active.
    • TPS signal greater than 5 percent.
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