Thread: Check Engine Lite
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Old Jan 11, 2004 | 01:13 PM
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Sunny
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Joined: Sep 2003
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From: USA
Default Check Engine Lite
Went to Autozone when my CEL came on , they told me it was The Catalyst System Efficiency Below Threshold ( Bank 1) , what is this Cat or 02 Sensor , also i'm getting crappy gas milage thanks


P.S. The code was P0420

Sunny
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