P1649

2B99 - P1649

Information saved in
DME

Fault code
2B99 - P1649

Fault text
DME2: Control unit, bank 2, internal fault: RAM backup

Fault description
Control module, internal fault: RAM backup

Condition for fault identification
Test condition:
If the error occurred during writing of the NVRAM
backup?s it is displayed with the NVRAM cell eeeExSt=1
(SW:eeeExitStatus). The DTC is entered only provided that
none of the power failure conditions (B_eepwf, B_pwf) has
been registered.
Terminal condition: Terminal 15=TRUE
Voltage condition:
9.5 < U < 17.9

Condition for fault memory entry
none

Action in service
Replace DME

Fault effect and breakdown warning
none

Driver information
Warning light:
none

Service instruction
none