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Cadillac DeVille DTS Check Engine Light on Due to Faulty Catalytic Conveter

 
Cadillac DeVille DTS Problem
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Model Years Affected: 2001, 2002, 2003, 2004, 2005

Average Mileage: 97,273 mi (58,495 mi - 167,070 mi)

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Failure of the catalytic converter can result in illumination of the Check Engine Light.

  • Visitor, , 63,800 mi

    check enigine light stays on steady. Computer code showed inefficient catalytic converter. Expensive replacement.

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  •  Enthusiast

    Check engine light on, tech referred me to Cadillac as he claimed catalytic converter needed replacement. Dealer verified and replaced under warranty (8 years/80k miles).

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