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Old 08-29-2011, 08:58 PM   #1
jaydeep
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2003 325I Error Codes P1083, P1085, P0174, P0171, P0313

Hi guys,

I recently my "Service Engine Soon" light is on. I took the car to the local auto store and pulled these codes from it.

P0171 Bank 1 too lean
P0174 Bank 2 too lean
P1083 Fuel control limit too lean Bank 1 Sensor 1
P1085 Fuel control limit too lean Bank 2 Sensor 1
P0313 Misfire has occurred with low fuel

My vehicle is a 2003 325I with 92K miles on it. Any advise you guys could give me beyond that would be greatly appreciated.
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Old 08-29-2011, 09:13 PM   #2
rube
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codes

Hey check your intake boots (both) any small cracks in the rubber will give you vacume leaks and give you those codes
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Old 08-29-2011, 09:14 PM   #3
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Sounds like the classic symptoms of a vacuum leak; check your lower intake boots and get a smoke test done as soon as you're able. Just my two and a half cents worth...
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Old 08-29-2011, 09:56 PM   #4
jaydeep
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Sounds like the classic symptoms of a vacuum leak; check your lower intake boots and get a smoke test done as soon as you're able. Just my two and a half cents worth...
What is smoke test? Why you say soon. Will it make other parts go bad?
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Old 08-29-2011, 10:14 PM   #5
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The sooner you get a smoke test the sooner you will discover or uncover the vacuum leak. A smoke test is where the mechanic blows smoke through the vacuum system in order to find the leaking hoses. It could either be something as simple as lower intake boots or as complex as crankcase ventilation hoses. No the problem won't get worse nor cause other parts to malfunction, its just that most folks are in a hurry to get back on the road...
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Old 08-29-2011, 10:19 PM   #6
ShepsBMW
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Im dont want to start yet another running lean topic, so ill add on here. If the code is bank two only and intake boots are fine, does that indicate an o2 sensor?
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Old 08-29-2011, 10:29 PM   #7
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not necessarily... i had bank1 only lean and it was intake boots, O2 sensors RARELY go bad.
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Old 10-10-2011, 09:27 PM   #8
jaydeep
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I looked at intake boots and checked DISA both are good. What else to check?
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Old 10-10-2011, 09:38 PM   #9
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Could be a hose connected to the intake boot with a crack. And did you actually take the intake boots completely off and inspect them or just give a quick look through the engine bay?
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Old 10-10-2011, 09:41 PM   #10
jaydeep
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Could be a hose connected to the intake boot with a crack. And did you actually take the intake boots completely off and inspect them or just give a quick look through the engine bay?
I took out intake boots and looked. Which hose you are talking about?
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Old 10-13-2011, 10:52 AM   #11
Jmarlowe330i
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I took out intake boots and looked. Which hose you are talking about?
Check both F-tube lines coming off top of intake boot sometimes they crack...very cheap to fix like un 2 doll hairs
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Old 12-08-2011, 12:53 AM   #12
tanik
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having the exact same code. how much does a smoke test run for dont want to get ripped by a mechanic.
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