Tuesday, September 24, 2019

2E98 - U1132

2020 BMW 128i Coupe (E82) L6-3.0L (N51) Diagnostic Trouble Codes ( DTC ): Service instruction



none









2E98



2E98 - U1132







Information saved in



DME









Fault code



2E98 - U1132









Fault text



Generator, communication









Fault description



Lost Communication With Generator via BSD (Bit Serial Data Interface)









Condition for fault identification



Test condition:





Alternator communications monitor Terminal condition: Terminal 15 ON Voltage condition:





Voltage in onboard electrical system > 10 V









Condition for fault memory entry Commercial vehicle >350 rpm, No communications fault







Action in service



Check wire (BSD_BUS) connecting alternator and DME.



Check plug-in connection at alternator.



Replace alternator.







Fault effect and breakdown warning







Driver information



Warning light:





No warning message. The alternator responds to loss of the BSD_BUS signal by charging at a constant 14.4 V battery.

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