07-04-2015, 07:40 AM | #1 |
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JB4 Drivetrain Malfunction?
Hey guys,
I just recently installed a JB4 tuner on my 435i. It seems to work well, but whenever I flood it, I get a drivetrain malfunction error code. I don't get any loss of power and the overall performance isn't affected. Is this something I should worry about? I don't like seeing error codes and I want to make sure this isn't something potentially bad. |
07-05-2015, 06:57 AM | #8 |
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07-05-2015, 09:39 PM | #9 | |
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Quote:
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07-06-2015, 11:32 AM | #10 |
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I would start by checking installation , then update the firmware.
Try to drive the car again and see if you are still having problems. If you are , use the USB cable to pull the codes.
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07-07-2015, 10:14 AM | #13 |
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07-07-2015, 04:58 PM | #15 |
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10-20-2015, 05:39 PM | #18 |
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Any update on this OP? I have same issue. Proper firmware and all.
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10-20-2015, 06:57 PM | #19 |
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08-03-2016, 09:48 AM | #20 |
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bump...going through the same motion after installation. Installed the latest PWG firmware from the N55 jb4 thread.
JB4 works but the car will throw the code sometimes without actual loss in output. Everything is connected except the flex fuel connector, actually didn't plug the female/male harnesses together on the JB4 (that's how i interpreted the installation lol) When I check for codes via laptop, says there are none...and when I restart the car it goes away to only come back later. |
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08-03-2016, 09:55 AM | #21 |
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I have had this error with a different piggyback when I disconnect the battery and either install or return to stock. Upon initial start up I get that indication, it then goes away and never returns, no codes thrown.
Not sure if you guys are getting this indicator more than the 1 time post initial install, or if it's like my situation. I think it is normal following battery disconnect and initial startup, at least that has been what I've seen.
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08-03-2016, 10:07 AM | #22 | |
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I get it often enough every time I drive, it will go away sometimes.
Just wondering what is causing the issue. I've read horror stories from guys cars just stopping mid drive (steering locks up, loss of power). Quote:
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