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2008 335I 2008 335I is offline
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Default 2ABD CODE W/ JB4 INSTALL - 09-20-2020, 09:57 PM

Hey All,

We're stuck with a 2ABD Code. Code appears after restarting the engine. Owner bought the car with a prior back end flash. We don't have any details regarding the prior back end flash. Already had a 3.5 bar N20 map sensor installed before the jb4 install. I have already replaced the 3.5 bar map sensor to hopefully fix the 2ABD code but the code still persists.

We're running map 2 as advised by jb4 support. Settings are =0 for map sensor voltage because when I entered =1 as advised by customer support we had additional codes with the JB4 installed which have now been cleared up.

Looking for some direction here. We would like to use the JB4 but it seems like it is interferring with the previous back end flash already installed on the dme/ecu.

Logs attached. It's not hitting desired targeted boost levels. Last time we ran it with JB4 uninstalled it held higher boost levels (monitored with mechanical boost gauge).

Any advice is greatly appreciated....
Attached Files
File Type: csv 18.csv (11.6 KB, 10 views)
File Type: csv 19.csv (13.4 KB, 8 views)
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nhatnguyen14 nhatnguyen14 is offline
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Default 09-21-2020, 06:36 AM

I have the same problem, 2ABD appears with half engine light after restart. I think it also causes my throttle to oscillicate when driving. Been chasing it but no luck. I'm running on a 4 bar, replaced that but still got the error code. Waiting for the OEM tmap to see if code goes away.
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2008 335I 2008 335I is offline
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Default 09-21-2020, 12:10 PM

Ok good to know, we already replaced the tmap sensor with no luck. Any chance Terry from BMS can provide insight on this??
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nhatnguyen14 nhatnguyen14 is offline
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Default 09-22-2020, 03:49 PM

just got the new OEM tmap, now getting a constant 3100 code and won't clear. no more 2ABD though. Still getting oscillation when driving. Thinking of doing boost leak test next. Anybody has any suggestions?
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