Friday, July 19, 2019

2AB4 - P16A3

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



none









2AB4



2AB4 - P16A3







Information saved in



DME









Fault code



2AB4 - P16A3









Fault text



DME, internal fault: RAM checksum









Fault description



Internal Control Module Non-Volatile Memory (NVMY) Error









Condition for fault identification



Test condition:





RAM checksum test





This test is executed once, while the control module is booting.





Terminal condition: Immediately after wakeup in dormant control module





Voltage condition: none









Condition for fault memory entry



No debounce. Fault can be reset by clearing fault memory.









Action in service



Start by checking ground connections on the ignition coils. If these are OK, proceed with the following steps.





Check to determine whether the diagnostic fault code is stored again after proceeding through the following routine. If yes: Replace DME.





Clear fault memory



Ignition off, allow vehicle to assume complete dormant status



Ignition on



Read out stored fault codes from fault memory







Fault effect and breakdown warning







Driver information Warning light: none

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