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P0055 OBDII Code

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Old Oct 7, 2010 | 05:48 PM
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Default P0055 OBDII Code

I have a 2004 Blazer that is giving me a P0055 code. It says it is for sensor 3. Where is this O2 sensor located? I only see 2. Thanks for the help.
 
Old Oct 7, 2010 | 05:56 PM
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B1S3 is the post cat sensor.
 
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