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2004 Mercedes-Benz C230 Question: Check Engine light on, changed oxygen sensor before cat conv

 

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ortizcristobal, Naco, AZ, October 31, 2012, 12:08
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And the light always comes on when I'm doing line for at least 20 min, but the car doesn't stalls or anything, fuel consumption is normal, cleaned the MAF and it pops up again. Any ideas

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