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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 09-09-2011, 05:29 PM   #1
nimmo01
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Join Date: Aug 2011
Location: Virginia Beach
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My Ride: 2001 BMW 325i
Just got my Peake scanner today

Came nicely packaged from bimmertools, everything was there and in new condition. Read the instructions for a few minutes which was literally a few, maybe 3-4 minutes to learn how to use this thing. Cleared my Service Engine Soon light and got some other warning codes which I'm hoping someone here can help me out with. I have a 2001 BMW 325i. The codes that I pulled are:

8F - DM-TL leak detected
F5 - Secondary Air Flow too low cylinders 1-3
F6 - Secondary Air Flow too low cylinders 4-6
E3 - O2 sensor adaptation limit Cylinders 1-3
E4 - O2 sensor adaptation limit Cylinders 4-6
A8 - Coolant thermostat jammed open
EE - Misfire cylinder 1

The last 2 are self explanatory but I'm not sure what the first 5 are and if they are related to one problem. Overall the Peake Scanner is really nice and easy to use, and worth the money. I'm just surprised it didn't say anything about my brakes, because the brake pad warning light is on in the dash and I thought this scanner could detect which one it is, other than that a great tool.

Last edited by nimmo01; 09-09-2011 at 05:30 PM.
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Old 09-09-2011, 08:15 PM   #2
ken@bimmertools
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Hi - first, thanks for the order!

Regarding the codes, definitely reset everything, drive normally, and see what returns. Some of the codes may be old and not indicative of any current issues.

Once you know what's acive, do some digging here and get fixin'.

Ken
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Old 09-09-2011, 11:10 PM   #3
Onesick330ci
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Hey how much did you pay for it?
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Old 09-10-2011, 09:33 AM   #4
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We sell them for $139.99 shipped.
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Old 09-10-2011, 12:07 PM   #5
Drez1985
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I would do what ken said and do reset and see which codes come back. The first codes might mean that you have a vaccum leak somewhere, and also might need new thermostat. Just reset and see which codes come back and go from there.
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Old 09-10-2011, 01:46 PM   #6
nimmo01
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i paid $176 shipped because i got the universal one that reads from year 1987-2006 because i like to work on cars and plan on keeping this for a while.
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Old 09-10-2011, 01:50 PM   #7
Onesick330ci
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Thanks guys for the input I should be getting mines soon...!
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Old 09-12-2011, 10:01 PM   #8
nimmo01
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just for reference, i found that the hose from that copper canister next to the air pump, leading to the back of the engine was broken, so after i swapped that hose for a new one, all of the codes went away.
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Old 09-25-2011, 07:13 PM   #9
nimmo01
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well i spoke too soon. i replaced the thermostat and the hose from the relay valve that goes to the back of the engine and got rid of most of the codes. now only the F5 and F6 codes keep coming up. now my question is, the air pump is pumping air, but i noticed that it whines a lot only when i go wide open throttle and at about 4-5k rpm, is this normal? when i drive normally i don't hear anything and i have verified that it is pumping air, any suggestions? should i replace the tan colored valve?
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Old 12-14-2011, 05:52 PM   #10
nimmo01
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*UPDATE*

DM-TL leak was fixed. I first replaced the fuel cap but that didn't help, then I replaced the DM-TL module on the back passenger side of the car and the code never came back.

Secondary air flow was fixed by replacing the hoses that come off of the air pump and the tan valve, one hose leads to the rear of the engine. Also, replaced the air pump itself when the codes came back because the air pump wasn't pumping air, after that the codes never came back.

Replaced thermostat and fixed that code.



Now I just replaced the pre-cat O2 sensors and now I get these codes.

E3 - O2 sensor adaptation limit Cylinders 1-3
E4 - O2 sensor adaptation limit Cylinders 4-6

CA- O2 sensor control limit Cylinders 1-3
CB- O2 sensor control limit Cylinders 4-6

I checked around the intake manifold and found two vacuum leaks that I fixed but the codes still come back. I am wondering if this has anything to do with the O2 sensors I just installed. They are oem bosch and i just got the control limit codes after installing them. Any ideas?
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