09-23-2015, 02:37 PM | #1 |
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BMW 435i JB4 drivetrain malfunction error
After I installed my jb4 and evolution racewerks charge pipe I have been getting this drivetrain malf. It has no decrease in performance it just pops up and goes away. I read the code with a reader and the code is p0172. Is there a way to stop this code from appearing? Or is it not harmful?
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09-23-2015, 02:49 PM | #2 |
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P0172
A google search brings the possible causes - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Faulty Mass Air Flow (MAF) sensor do you have your JB4 set to delete codes? might be the DP and O2 sensor not reading properly since there is no cat. |
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09-23-2015, 02:59 PM | #3 |
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Yes the jb4 is set to delete codes. I have a downpipe with 200 cell race cats, diverter valve and a CAI I'm installing this weekend. Would there be any parts I can replace while I'm down there to fix the problem? Or should I just order a jb4 cable and turn off the auto clear to get a better read of the code?
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09-23-2015, 06:50 PM | #4 |
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Contact jon@burgertuning.com
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09-24-2015, 08:09 AM | #5 | |
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09-24-2015, 01:16 PM | #6 | |
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