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      08-14-2010, 05:22 PM   #1
plrbear81
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2F71 Fault Code

Does anyone know what the 2F71 code means in English?? I just hooked up my BT cable today for the first time and got the below code in addition to the famous 2FBF fuel pump code as well as a 2F80 "Motor shutoff time plausibilitiy." Also, these were the only three codes I pulled up on the fault codes and shadow fault codes listing. Do I need to delete these before I take it in? I already pulled my RR intake and JB3. Thanks.

2F71 E-box-fan, input signal
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
Signal or value below threshold
[/SIZE]
Freeze Frame Information Event 1 Odometer776kms482milesEngine speed2,496.00rpmIntake air temperature19.50°Ccontrol unit inside temperature45.75°CSpeed109.00km/h
Event 2 Odometer2280kms1416milesEngine speed960.00rpmIntake air temperature34.50°Ccontrol unit inside temperature34.50°CSpeed0.00km/h
Event 3 Odometer23920kms14863milesEngine speed704.00rpmIntake air temperature60.75°Ccontrol unit inside temperature59.25°CSpeed0.00km/h

2FBF:
2FBF Fuel pressure at injection release
Error will not cause a warning light
Error is not currently present
Test conditions have been completed
Short circuit or signal interruption

Freeze Frame Information Event 1 Odometer22496kms13978milesrail pressure5,434.07hPaPWM-Signal of mass control valve47.66%voltage Kl. 8710.77Vfuel pressure before mass control valve5,561.44hPa
Event 2 Odometer23008kms14296milesrail pressure2,717.04hPaPWM-Signal of mass control valve48.83%voltage Kl. 8710.97Vfuel pressure before mass control valve5,434.08hPa
Event 3 Odometer23896kms14848milesrail pressure5,434.07hPaPWM-Signal of mass control valve50.39%voltage Kl. 8711.17Vfuel pressure before mass control valve5,391.63hPa

2F80:
2F80 Motor shutoff time, plausibility
Error will cause a warning light
Error is not currently present
Test conditions have been completed
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      08-14-2010, 05:29 PM   #2
Dackelone
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I did a search and found this...

http://www.e90post.com/forums/showthread.php?t=406772

>
>I believe the codes that start with an "A" are light codes. The JB3 is my only mod >and I never have engine/tuning related codes. One day I had a "light out" >warning pop up on my dash and when I BT'd the car, I had several "A" codes pop >up. The goofy thing is that none of my lights were out. I searched around on the >forum and found that there is an SIB (service bulletin) from BMW stating that >there is a known issue with our tail lamps/lamp socket. The warning lights pop up >but no lights are out and this is caused by vibration. There is a fix for this at the >dealer where they will install some foam pads on the housing to dampen the >shock. Not sure if it works as I've yet to take mine into the dealer.
>
>
>I've seen that code on a friends 335i that I've BT'd a couple times. I'm told >there >is a fan in the electrical box (ebox) where the ECU and the JB3 are >located. I've never looked for it but have heard it mentioned a few times. I >think I've read that the fan blows into the cabin through the firewall to keep the >ebox cool. Did you run the jb3 cable into your glove box through the firewall? If >you did, maybe something happened to the fan during the install.
>
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      08-15-2010, 09:47 PM   #3
plrbear81
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Thanks for the explanation. With the three codes I listed, is it safe to not erase them when I take it in for its first service?

And now after removing the JB3 and the intake i'm having to reset my clock everytime I start the engine...it is getting annoying. Any ideas on what I did to cause that?
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      12-09-2020, 10:52 PM   #4
payohtea
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The clock reset is more than likely caused by a short imho. Double triple quadruple check any wiring alterations (if any..) youve made.
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      12-10-2020, 08:49 AM   #5
blue135
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Had the clock issue you describe for a while everytime I started it. Cured the problem when I replaced the battery.
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