Question about 2001 Chrysler Town & Country

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Service engine soon on 1998 dodge caravan 3 l

I did the code check thing and it came up 12 21 55...so 21 is the problem....can anyone enlighten me as to what this means...tks

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This is a bad o2 sensor code so replace the front o2 sensor.

Posted on Jun 21, 2009

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