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Cel just came on accompanied by loud hissing and....

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Old 05-28-2004, 01:12 PM
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Default Cel just came on accompanied by loud hissing and....

this fault code:
17544 - Fuel Trim: Bank 1 (Add): System too Lean
P1136 - 35-00 - -
Any ideas??? N249 valve??
Old 05-28-2004, 01:20 PM
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Default N249 would probably affect both banks.

Does the hissing occur all the time or only when you are on boost?

If its all the time, see if you can pinpoint the noise. Perhaps check if an injector somehow came unseated.

-Dave Pramanik
Old 05-28-2004, 01:35 PM
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Default here is a pic of where the hissing is comming from..

<center><img src="http://pictureposter.audiworld.com/69693/dsc00085.jpg"></center><p>this is the N249 right??
Old 05-28-2004, 02:07 PM
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Default Thanks for the help...I should also note...

That I have had this fault code for about a month but it hasn't casused my CEl to come on.
17539 - Oxygen (Lambda) Sensor: B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
Old 05-28-2004, 04:11 PM
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Default The N249 is the grey thing at the bottom of the pic.

You are pointing at a check valve that is a common problem, I believe.

-Dave Pramanik
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