4D11

4D11 - P20EE

Information saved in
DDE

Fault code
4D11 - P20EE

Fault text
Reduction agent metering, long-term adaptation: Adaptation
value too high

Fault description
Monitoring long-term adaptation factor. The diagnostic
trouble code is logged when the long-term adaptation factor
rises above the maximum limit 1.

Condition for fault identification
Test condition:
The error check runs only with a rising flank for long-term
adaptation factor and when no other faults are present.
The check runs continuously in a 100 ms grid.
Voltage condition:
The error check runs only with a rising flank for long-term
adaptation factor and when no other faults are present.
The check runs continuously in a 100 ms grid.

Condition for fault memory entry
Event debounced (10)

Action in service
Depending upon the problem source:
- Refill tank (quality of reduction agent).
- Clean/replace (metering module/NOx sensor/SCR
converter/particulate filter).

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none