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E46 Convertible
The E46 vert forum. Talk about dropping your E46 top here.

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Old 07-25-2014, 05:27 AM   #1
Laleyenda
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E46 m54 fault codes 227/228 HELP

Hi i have these fault codes that keep coming and the Engine Warming light comes on, no changes in the driving ability, i have checked ALL hoses for cracks and so, changes the MAF and ccv and all hoses, but it keep coming up with these fails, i tried while the Engine running to disconnect the MAF and the Engine just Fall a few rpm and goes back to normal, nothing Els? Anybody have and idea of where the fault could be, i Also checked the oilcap for any leak and nothing there ??? I need some help:-) anybody?

The fault codes Are
Those at the picture.Click image for larger version

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Old 07-25-2014, 11:58 AM   #2
jfoj
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You have Lean conditions at both idle and higher RPM's.

It is not an O2 sensor problem, it is likely a fuel supply/air leak issue.

If you have the original MAF, put it back on the car.

Also you need a different OBDII tool.

A smart phone App and interface will be much better than the software you are using. Usually $35 USD or less.

Need Freeze Frame Info and Fuel Trims at Warm Idle and steady highway cruise.

Also need to graph/finger print O2 sensor behavior as well.

See this example - http://forum.e46fanatics.com/showthread.php?p=16203126
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 07-25-2014, 12:30 PM   #3
Laleyenda
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I tried both the new MAF and the old and it is same behavior i checked ALL hoses for crackes and so and nothing there, i Also measured the lambda value while driving and one of Them dropped alot and then the others went the other Way to conpensate for the one that dropped. I all was checked when the Engine was at the prober temperture. Could it be a fault lambda?


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Old 07-25-2014, 01:44 PM   #4
jfoj
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Quote:
Originally Posted by Laleyenda View Post
I tried both the new MAF and the old and it is same behavior i checked ALL hoses for crackes and so and nothing there, i Also measured the lambda value while driving and one of Them dropped alot and then the others went the other Way to conpensate for the one that dropped. I all was checked when the Engine was at the prober temperture. Could it be a fault lambda?
Lambda/O2 sensors are not likely the issue as you have both banks reporting a Lean condition. One bank at idle, the other at a higher RPM.

So either the Lambda/O2 sensor wiring may be backwards or you have a Lean condition due to intake air leaks and/or a wrong/counterfeit MAF??

You really need a generic OBDII tool that can give you good info and can log/record the O2 sensors and Fuel Trims.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 07-25-2014 at 01:44 PM.
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Old 07-25-2014, 01:46 PM   #5
Laleyenda
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Okay thanks i'll try that


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Old 07-26-2014, 08:16 AM   #6
R1200RT
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It might be worth checking your DISA valve. I had recent lean codes that were tracked down to poor seal at DISA valve seal.
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Old 07-26-2014, 08:17 AM   #7
Laleyenda
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Disa valve?


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Old 07-26-2014, 12:34 PM   #8
jfoj
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Read the 1st link in my signature.

You MUST use a computer, log onto the forum, then you will see signatures.

But if you REALLY want to try and read the link in my signature on a phone, here is it - http://forum.e46fanatics.com/showthread.php?t=897616

If you had the ability to graph the O2 sensors then you could determine if there is a bad one, BUT looking at the O2 sensors the way you are will not really tell you anything, see the graphs in this thread - http://forum.e46fanatics.com/showthread.php?p=16203126
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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