Another Trouble Code 1151

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Apr 9, 2007 | 07:08 PM

sprinklerguy

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Another Trouble Code 1151

After doing a search and reading the threads...seems the 1151 trouble code indicates a bad o2 sensor, drivers side....front....

I don't own a manual...mostly because I have you guys

anyone care to post a pic of where to start looking for this bad boy?

125k on my truck...I have already done a limited search for vacuum leaks....haven't found any, the sensors have never been changed.....

Thanks in advance...

Apr 9, 2007 | 08:32 PM

Lowglow

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Joined: Mar 2002

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From: New Concord USA

I had the same problem

I had the same problem about 2 months ago, and I changed the same O2 sensor, went from having a P1151 code, to having P1151 and P1131, and it did no good. Mine turned out to be the isolator bolts and gaskets for the upper intake. I ended up changing that O2 sensor, the Mass Air Flow sensor, the Idle Air Control, 2 different Fuel Filters, and 2 different Air filters, and a lot of time in the great outdoors in 10 degree whether, and it all ended up being 8 special bolts, 6 port gaskets, and the plenum gasket. No promises, but might be something to look at. Good luck

Apr 10, 2007 | 12:06 AM

LxMan1

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Joined: Dec 2001

Posts: 22,436

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From: Louisville,Ky.

To answer your question, look in the dirvers side wheel well. It is located just behind the exhaust manifold in the pipe.
I would first inspect the pcv hose assembly. The elbows are know to get soft and crack causing a vacuum leak as well as cleaning the MAF before replacing the O2 sensor. It is saying that it is running leaner then the O2 sensor can adjust for.