Def Supply And Metering System Malfunctions. 16MY EU_B 17MY EU_B
WARNING: This page is about a different variant/trim than selected.
| APPLICATION | APPLICATION |
|---|---|
| 16 MY Eu_B | 17 MY Eu_B |
The OBD system monitors components and the functionality of the DEF supply and metering system. If a malfunction is detected a message centre warning is displayed. If no action is taken to rectify the warning malfunction, this will eventually lead to a 'No engine restart' situation
| DEF SUPPLY AND METERING SYSTEM MALFUNCTION INSTRUMENT CLUSTER WARNING MESSAGE | DTC(s) | PURPOSE AND CAUSE | ACTION |
|---|---|---|---|
|
NOTE:
The following DTC(s) are related to the DEF
SUPPLY AND METERING SYSTEM and will be responsible for the Instrument cluster warning message(s) seen in this table
|
|
|
|
NOTE:
The following DTC(s) are related to the DEF
SUPPLY AND METERING SYSTEM and will be responsible for the Instrument cluster warning message(s) seen in this table
|
|
|
|
NOTE:
The following DTC(s) are related to the DEF
SUPPLY AND METERING SYSTEM and will be responsible for the Instrument cluster warning message(s) seen in this table
|
|
|
|
NOTE:
The following DTC(s) are related to the DEF
SUPPLY AND METERING SYSTEM and will be responsible for the Instrument cluster warning message(s) seen in this table
|
|
|
|
NOTE:
The following DTC(s) are related to the DEF
SUPPLY AND METERING SYSTEM and will be responsible for the Instrument cluster warning message(s) seen in this table
|
|
|
DEF Supply and Metering System Malfunctions
The following DEF supply and metering system malfunctions may trigger the message centre warning system
- Pressure build up in the supply line
- Metering/injection time to closed loop
- Over pressure in supply line
- Under pressure in supply line
- Injection valve open circuit
- SCR system relay open circuit
- Solenoid pump(s) open circuit
- Combined temperature/level sensor open circuit
- Missing communication with upstream NOx sensor (NAS variants only)
- Missing communication with downstream NOx sensor