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.
1. Clear fault memory
2. Ignition off, allow vehicle to assume complete dormant
status
3. Ignition on
4. Read out stored fault codes from fault memory

Fault effect and breakdown warning


Driver information
Warning light:
none

Service instruction
none