Check Engine Light on Due to Failed Catalytic Converter on Mercedes-Benz E500

Catalytic converter failure is common and may cause a Check Engine Light to illuminate.

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Average mileage: 92,666 (55,000–143,000)
4 model years affected: 2003, 2004, 2005, 2006 more
7 people reported this problem
1 person shared problem details
Check engine light came on. Took whole day for dealer to diagnose it.
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