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N54Carl N54Carl is offline
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Join Date: Oct 2020
Car: 335i
Exclamation Fitting a used JB4 error codes - 10-07-2020, 12:43 PM

Hi everyone

Anyone running a JB4 on an N54 want to help me out?

Brought a second hand unit.
Plugged in fine and easy.

Turned car on and EML comes on with reduced power warning etc etc.

Took it for a drive....no boost

Checked codes and I have

2ABC - charging pressure sensor
2ABD - intake pressure sensor
30D0 - wastegate 2 unplugged
30CF - wastegate unplugged
3100 - limp mode

Iíve cleared codes and all come back.
Car obviously drives terribly

I removed the JB4 and all returns to normal

Any ideas at all?
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