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Home >> Pontiac >> 1989 >> Firebird Formula, 5.7 8 >> Repair and Diagnosis >> Engine Performance >> System >> 5.0L/5.7L PFI Tests W/Codes >> Diagnosis & Testing >> Code 45: Rich Exhaust Indication >> Notes

Code 45: Rich Exhaust Indication: Notes

  1. Code 45 is set when the oxygen sensor signal voltage on circuit No. 412 remains greater than .7 volt for 30 seconds, in "closed loop", engine time after start is one minute or more, and throttle angle is 3-45 percent.