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ace3166

1999 Suburban O2 sensor,which one??

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I have a 1999 GMC Suburban K1500 5.7L and get this trouble code:

P0141 O2 sensor heater circuit malfunction (bank 1-sensor 2)

 

Can somebody verify which sensor it would be? There are 4 of them. Don't want to replace all four as the truck has only 58K and the sensors are supposed to be good for 100k.

 

Thanks!!

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Check your fuse panel and make sure that it isn't just a blown fuse.I had the code some up for my heater circuit on B1S1 and it was just a fuse that I didn't even know existed.

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Thanks, I will check that out. Anyone else know which sensor it is in case I have to replace it??

 

Also I which fuse panel?? under hood or inside vehicle?

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