What does it mean when your car says "Catalyst System Low Efficiency"?

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What does it mean when your car says "Catalyst System Low Efficiency"?

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What does it mean when your car says "Catalyst System Low Efficiency"?

Asked by Jen on Tuesday, May 23 2017 for a 2014 BMW X1 L4-2.0L Turbo

What does it mean when your car says "Catalyst System Low Efficiency"?

Answers

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