(DME) Condition Engine Running

2B4D - P1399

Information saved in
DME

Fault code
2B4D - P1399

Fault text
Bank 2 ionic current control module internal fault

Fault description


Condition for fault identification
Test condition:
Engine running.
Terminal condition: Terminal 15
Voltage condition:
9 V

Condition for fault memory entry
For at least one cylinder ionic current signal lies at
K_Ionenstromsteuerger�t_ADC_Max = 3.29V throughout
the entire measurement window (including spark duration).

Action in service
1. Replace ionic current control module.

Fault effect and breakdown warning
Rough idle / engine rpm limitation displayed / reduced
power / Check Control message / MIL after engine runs 2x

Driver information
Warning light:
No

Service instruction
none