diagnostic trouble code

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Jun 26, 2005 | 01:09 PM

20012001

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diagnostic trouble code

My check enginge light has been on for a while now. I went to DEQ in order to register my truck and I failed. I got a code of PO171, system too lean (bank 1).

Does any one know what part I will need to fix this problem?

20012001

Jun 26, 2005 | 01:37 PM

IB Tim

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Jun 26, 2005 | 04:38 PM

Ken00

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Welcome to FTE!!!

What engine do you have???

Jun 27, 2005 | 10:01 AM

20012001

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I have the 3.2

Jun 27, 2005 | 08:01 PM

Ken00

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From: South Jersey

I think you mean 3.0. I would start by looking for vacuum leaks, I'm sure the other users will have some more suggestions.

Jun 27, 2005 | 09:46 PM

Rockledge

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Bank 1 is the passenger side of the engine. The PO171 code means that too much air is being burned in the combustion chamger(s) on that side, and hence the oxygen sensor on that side is sensing a "lean" condition. That's why Ken00 is suggesting that you look for vacuum leaks, such as failing vacuum hoses & connections, because that's where excess air can be drawn into the engine. Another example is a bad upper intake manifold gasket that can also allow air into a particular cylinder or two. So it's things like that you should be thinking about.

Good luck with the code and the test.

Jun 28, 2005 | 01:47 AM

pete dumbleton

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Rockledge, is there any reference place to look up the likely causes of the various codes, like you just did? You went from the code to the likely cause -- Some are less obvious than others...