P071 Bank 1 lean code?

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Jun 25, 2004 | 09:04 PM

Stuart S

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Launching!

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From: Long Island, NY

P0171 Bank 1 lean code?

Any ideas? (2002 M6 Z28)

Car seems to run perfectly fine but i'm getting a chronic SES. I cleared the codes twice, incase it was a fluke, and it keeps throwing it. I put some fuel injector cleaner through it, just wondered if anyone had any insight before I bite the bullet and leave it with the ever-so-careful dealer for a "few days"

Nothing under the hood looks obviously off or damaged. And since i'm not getting a sensor code, it's not something easily identified, at least, I don't think it is...

In 2 1/2 yrs there's not a mark on the car, I'd hate to see it go to **** for something stupid like this...

Any help is appreciated...

Last edited by Stuart S; Jun 25, 2004 at 10:04 PM.

Sep 1, 2004 | 05:57 PM

Stuart S

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Launching!

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From: Long Island, NY

Hey guys, dealer replaced both O2's under warrantee this past monday, but the SES is on again, same problem. I dunno what it is. Anyone else have experience w/this?

Sep 1, 2004 | 06:10 PM

ss rally red

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From: Destin FL

If it was a P0171 not 71 that would be lean on the left bank, check to see if there is any kind of a vacuum leak.

Sep 1, 2004 | 08:21 PM

Stuart S

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Launching!

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From: Long Island, NY

Yes, it's P0171, I edited the post title originally but it didn't update the title..

I'm already aware that a P0171 is lean bank 1... what vac lines should I be looking at?

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