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p1128 CEL thread

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Old 09-20-2005, 07:54 PM
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Default p1128 CEL thread

I have gotten this p1128 CEL twice. I decided to change the bypass (710N) valve, because that is what was done under warranty to fix the problem.
It helped it but did not solve.

The car still hesitates slightly when she is first starting to get going. This is only for about the first 3K rpm.

I am thinking it is the MAF from my searching on here.

Is there anyone who can confirm or deny this, or is there something else I should be trying?

Thanks..

History on car:
2001 225 Quattro Coupe 31Kmiles on car
Old 09-20-2005, 08:13 PM
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Default P1128 Long Term Fuel Trim mult.,Bank1 System too Lean?

Sounds like bad MAF. Take it back to the dealer. MAF is covered for 7yrs/70K miles now.
Old 09-20-2005, 10:19 PM
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Default Please write out the description of the code next time but if it is

what Shiftt said, as in "bank1 system too lean" then the mass airflow sensor (MAF) has gone bad.
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