code P0139 ???
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Three Wheeling
Joined: Jan 2007
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code P0139 ???
I'm getting a code P 0139 02 circuit slow, bank 1 sensor 2
what is it ? I scan the truck because for no real reason, all of the sudden the engine start to get hot after a 5 minutes ride (didn't go to the red) and then went back to normal temp. it did it twice.
forgot, disco II 2001 98K miles
what is it ? I scan the truck because for no real reason, all of the sudden the engine start to get hot after a 5 minutes ride (didn't go to the red) and then went back to normal temp. it did it twice.
forgot, disco II 2001 98K miles
4wd High
Joined: Jun 2008
Posts: 9
Likes: 0
RE: code P0139 ???
Administrator
Joined: Apr 2006
Posts: 25,707
Likes: 107
From: Denver, Colorado
RE: code P0139 ???
At your mileage, you should replace all 4 02 sensors. That being said, this is not causing your overheat issues and this needs to be addressed ASAP. Have you been having to add coolant lately, or smell it?
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