P1689

2B55 - P1689

Information saved in
DME

Fault code
2B55 - P1689

Fault text
Internal fault within control module

Fault description


Condition for fault identification
Test condition:
Level 1 OK
Terminal condition: Terminal 15
Voltage condition:
none

Condition for fault memory entry
Deviation too large (KF_MD_KUPP_OFF_E2,
K_MD_E2_IST_SCHW, ...)

Action in service
1. Delete stored DTCs from error memory
2. Update DME
2. Replace DME

Fault effect and breakdown warning
Reduced power / engine 3500 rpm limited / Check Control
message / MIL comes on after engine runs 2x

Driver information
Warning light:
29-Engine malfunction

Service instruction
none