Need help solving engine code

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Jul 1, 2006 | 03:21 PM

ice-burg-slimm

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Joined: Jul 2006

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Need help solving engine code

I have a 2002 f150 with the 4.6l.The truck is giving a code system lean bank 1 & 2.I was told that it's my o2 sensors,so i'm trying to see if any one as more info.

Jul 1, 2006 | 04:08 PM

screwy

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Joined: Aug 2002

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From: Over Yonder, MN

Check for leaks that are letting air in After the MAF.

Jul 1, 2006 | 04:10 PM

LxMan1

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Joined: Dec 2001

Posts: 22,436

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From: Louisville,Ky.

Welcome to the forum.

It's probably not the O2 sensors. The two most common causes of these codes are 1) A cracked PCV hose elbow. Usually where the hose connects to the rear of the intake manifold. 2) A dirty MAF. It is located in the intake trac just to the laft of the air filter housing. If you look into the air tube, you will see it. It has 2 small wires at the top. Spray them with electrical contact cleaner. Do not touch them, they are very fragile.
Hope this helps,
Jimmy