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Eleventeen Eleventeen is offline
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Posts: 201
Join Date: Apr 2009
Car: 2007 335i
Default MAP sensor codes with JB4 installed - 11-20-2020, 09:00 PM

I have an S55 JB4 that is causing a CEL with two MAP sensor codes. Iím wondering if I may have touched the USB cable to the positive jumper lug and fried it. The codes were:

* Ambient pressure sensor shorted to positive
* Boost pressure sensor shorted to positive

Sorry, I forgot to note the numeric portion of the codes. I removed the JB4 and cleared the codes and the car seems okay. What components on the board do I have to replace?Thanks!

Ferrari Red F80
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