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Bigc
Bigc 5/29/2010
2000 Saturn SL Base 4Cyl1.9L - Engine
What it mean when the scanner said catalyst system efficiency below threshold(bank1)
1 Answer
  • HouseCallAuto
    HouseCallAuto 5/29/2010
    It means that the catalytic converter is not functioning (low efficiency) and needs replacement.
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