BMW 525i Oxygen Sensor Replace/Remove

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Catalytic Converter Efficiency?

2001 BMW 525I

I Am Getting Four Error Codes From My Scanner: 1. Catalytic Converter Efficiency, Cyl 1-3 2. Oxygen Sensor Control Limit, Cyl 1-3 3....

1 ANSWER

Asked by daveglass

1992 BMW 525I

How Many Oxygen Sensors Does My 1992 525i Have? And Which Is The Best Replacement Sensor To Purchase?

1 ANSWER

Asked by michael gabriel

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