P0138 on and off.
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TECH Enthusiast
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Joined: Jan 2007
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From: Northern Virginia
P0138 on and off. I need to get this sucker fixed, my SES light comes on from time to time. When the light is not on if I use an engine scanner the code still appears. I do have some O2 simms but when I have them in to delete this I get poor mileage. When the light comes on I get poor mileage as well. When the light is off but the code still reads on a scanner then my mileage seems normal. From what i've read it's a code saying i'm running too rich or that there could be water or a lose connection in the wire. How can I go about fixing this little code so I can pass emissions this month.
Thread Starter
TECH Enthusiast
iTrader: (2)
Joined: Jan 2007
Posts: 519
Likes: 7
From: Northern Virginia
Thread Starter
TECH Enthusiast
iTrader: (2)
Joined: Jan 2007
Posts: 519
Likes: 7
From: Northern Virginia
wow almost a year later nice bump! lol I can't say I ever really fixed it but it does turn on and off from month to month. I wonder if maybe it's my 02 extensions I put in, maybe they are a worse quality of wire and that is throwing the voltage off.
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